diff --git a/plugins/bed/src/BedAdapter/BedAdapter.test.ts b/plugins/bed/src/BedAdapter/BedAdapter.test.ts
new file mode 100644
index 0000000000..d772b882e3
--- /dev/null
+++ b/plugins/bed/src/BedAdapter/BedAdapter.test.ts
@@ -0,0 +1,170 @@
+import { toArray } from 'rxjs/operators'
+import BedAdapter from './BedAdapter'
+import MyConfigSchema from './configSchema'
+
+import { TextDecoder } from 'web-encoding'
+if (!window.TextDecoder) {
+  window.TextDecoder = TextDecoder
+}
+
+test('adapter can fetch features from volvox-bed12.bed', async () => {
+  const adapter = new BedAdapter(
+    MyConfigSchema.create({
+      bedLocation: {
+        localPath: require.resolve('./test_data/volvox-bed12.bed'),
+        locationType: 'LocalPathLocation',
+      },
+    }),
+  )
+
+  const features = adapter.getFeatures({
+    refName: 'ctgA',
+    start: 0,
+    end: 20000,
+    assemblyName: 'volvox',
+  })
+  expect(await adapter.hasDataForRefName('ctgA')).toBe(true)
+  expect(await adapter.hasDataForRefName('ctgB')).toBe(false)
+
+  const featuresArray = await features.pipe(toArray()).toPromise()
+  const featuresJsonArray = featuresArray.map(f => f.toJSON())
+  expect(featuresJsonArray.slice(0, 10)).toMatchSnapshot()
+})
+
+test('adapter can fetch features from volvox.sort.bed simple bed3', async () => {
+  const adapter = new BedAdapter(
+    MyConfigSchema.create({
+      bedLocation: {
+        localPath: require.resolve('./test_data/volvox.sort.bed'),
+        locationType: 'LocalPathLocation',
+      },
+    }),
+  )
+
+  const features = adapter.getFeatures({
+    refName: 'contigA',
+    start: 0,
+    end: 20000,
+    assemblyName: 'volvox',
+  })
+  expect(await adapter.hasDataForRefName('contigA')).toBe(true)
+  expect(await adapter.hasDataForRefName('ctgB')).toBe(false)
+
+  const featuresArray = await features.pipe(toArray()).toPromise()
+  const featuresJsonArray = featuresArray.map(f => f.toJSON())
+  expect(featuresJsonArray.slice(0, 10)).toMatchSnapshot()
+})
+
+test('adapter can fetch features bed with autosql', async () => {
+  const adapter = new BedAdapter(
+    MyConfigSchema.create({
+      bedLocation: {
+        localPath: require.resolve('./test_data/volvox-autosql.bed'),
+        locationType: 'LocalPathLocation',
+      },
+
+      autoSql: `table gdcCancer
+"somatic variants converted from MAF files obtained through the NCI GDC"
+    (
+    string chrom;      "Chromosome (or contig, scaffold, etc.)"
+    uint   chromStart; "Start position in chromosome"
+    uint   chromEnd;   "End position in chromosome"
+    string name;       "Name of item"
+    uint   score;      "Score from 0-1000"
+    char[1] strand;    "+ or -"
+    uint thickStart;   "Start of where display should be thick (start codon)"
+    uint thickEnd;     "End of where display should be thick (stop codon)"
+    uint reserved;     "Used as itemRgb as of 2004-11-22"
+    int blockCount;    "Number of blocks"
+    int[blockCount] blockSizes; "Comma separated list of block sizes"
+    int[blockCount] chromStarts; "Start positions relative to chromStart"
+    string sampleCount;    "Number of samples with this variant"
+    string freq;                    "Variant frequency"
+    lstring Hugo_Symbol;            "Hugo symbol"
+    lstring Entrez_Gene_Id;         "Entrez Gene Id"
+    lstring Variant_Classification; "Class of variant"
+    lstring Variant_Type;           "Type of variant"
+    lstring Reference_Allele;       "Reference allele"
+    lstring Tumor_Seq_Allele1;      "Tumor allele 1"
+    lstring Tumor_Seq_Allele2;      "Tumor allele 2"
+    lstring dbSNP_RS;               "dbSNP RS number"
+    lstring dbSNP_Val_Status;       "dbSNP validation status"
+    lstring days_to_death;          "Number of days till death"
+    lstring cigarettes_per_day;     "Number of cigarettes per day"
+    lstring weight;                 "Weight"
+    lstring alcohol_history;        "Any alcohol consumption?"
+    lstring alcohol_intensity;      "Frequency of alcohol consumption"
+    lstring bmi;                    "Body mass index"
+    lstring years_smoked;           "Number of years smoked"
+    lstring height;                 "Height"
+    lstring gender;                 "Gender"
+    lstring project_id;             "TCGA Project id"
+    lstring ethnicity;              "Ethnicity"
+    lstring Tumor_Sample_Barcode;   "Tumor sample barcode"
+    lstring Matched_Norm_Sample_Barcode;  "Matcheds normal sample barcode"
+    lstring case_id;                "Case ID number"
+)`,
+    }),
+  )
+  const features = adapter.getFeatures({
+    refName: 'ctgA',
+    start: 0,
+    end: 20000,
+    assemblyName: 'volvox',
+  })
+  expect(await adapter.hasDataForRefName('ctgA')).toBe(true)
+  expect(await adapter.hasDataForRefName('ctgB')).toBe(false)
+
+  const featuresArray = await features.pipe(toArray()).toPromise()
+  const featuresJsonArray = featuresArray.map(f => f.toJSON())
+  expect(featuresJsonArray.slice(0, 10)).toMatchSnapshot()
+})
+
+test('adapter can fetch bed with header', async () => {
+  const adapter = new BedAdapter(
+    MyConfigSchema.create({
+      bedLocation: {
+        localPath: require.resolve('./test_data/volvox.sort.with.header.bed'),
+        locationType: 'LocalPathLocation',
+      },
+    }),
+  )
+
+  const features = adapter.getFeatures({
+    refName: 'contigA',
+    start: 0,
+    end: 20000,
+    assemblyName: 'volvox',
+  })
+  expect(await adapter.hasDataForRefName('contigA')).toBe(true)
+  expect(await adapter.hasDataForRefName('ctgB')).toBe(false)
+
+  const featuresArray = await features.pipe(toArray()).toPromise()
+  const featuresJsonArray = featuresArray.map(f => f.toJSON())
+  expect(featuresJsonArray.slice(0, 10)).toMatchSnapshot()
+})
+
+test('adapter can use gwas header', async () => {
+  const adapter = new BedAdapter(
+    MyConfigSchema.create({
+      bedLocation: {
+        localPath: require.resolve('./test_data/gwas.bed'),
+        locationType: 'LocalPathLocation',
+      },
+      colRef: 0,
+      colStart: 1,
+      colEnd: 1,
+    }),
+  )
+
+  const features = adapter.getFeatures({
+    refName: '1',
+    start: 0,
+    end: 100_000,
+    assemblyName: 'hg19',
+  })
+
+  const featuresArray = await features.pipe(toArray()).toPromise()
+  const featuresJsonArray = featuresArray.map(f => f.toJSON())
+  expect(featuresJsonArray.slice(0, 10)).toMatchSnapshot()
+})
diff --git a/plugins/bed/src/BedAdapter/BedAdapter.ts b/plugins/bed/src/BedAdapter/BedAdapter.ts
new file mode 100644
index 0000000000..b6d8ebd477
--- /dev/null
+++ b/plugins/bed/src/BedAdapter/BedAdapter.ts
@@ -0,0 +1,177 @@
+/* eslint-disable @typescript-eslint/no-explicit-any */
+import BED from '@gmod/bed'
+import {
+  BaseFeatureDataAdapter,
+  BaseOptions,
+} from '@jbrowse/core/data_adapters/BaseAdapter'
+import { openLocation } from '@jbrowse/core/util/io'
+import { ObservableCreate } from '@jbrowse/core/util/rxjs'
+import { Region, Feature } from '@jbrowse/core/util'
+import { featureData } from '../util'
+import IntervalTree from '@flatten-js/interval-tree'
+import { unzip } from '@gmod/bgzf-filehandle'
+
+function isGzip(buf: Buffer) {
+  return buf[0] === 31 && buf[1] === 139 && buf[2] === 8
+}
+
+export default class BedAdapter extends BaseFeatureDataAdapter {
+  protected bedFeatures?: Promise<{
+    header: string
+    features: Record<string, string[]>
+    parser: typeof BED
+    columnNames: string[]
+    scoreColumn: string
+    colRef: number
+    colStart: number
+    colEnd: number
+  }>
+
+  protected intervalTrees: {
+    [key: string]: Promise<IntervalTree | undefined> | undefined
+  } = {}
+
+  public static capabilities = ['getFeatures', 'getRefNames']
+
+  private async loadDataP(opts: BaseOptions = {}) {
+    const pm = this.pluginManager
+    const bedLoc = this.getConf('bedLocation')
+    const buf = await openLocation(bedLoc, pm).readFile(opts)
+    const buffer = isGzip(buf) ? await unzip(buf) : buf
+    // 512MB  max chrome string length is 512MB
+    if (buffer.length > 536_870_888) {
+      throw new Error('Data exceeds maximum string length (512MB)')
+    }
+    const data = new TextDecoder('utf8', { fatal: true }).decode(buffer)
+    const lines = data.split('\n').filter(f => !!f)
+    const headerLines = []
+    let i = 0
+    for (; i < lines.length && lines[i].startsWith('#'); i++) {
+      headerLines.push(lines[i])
+    }
+    const header = headerLines.join('\n')
+    const features = {} as Record<string, string[]>
+    for (; i < lines.length; i++) {
+      const line = lines[i]
+      const tab = line.indexOf('\t')
+      const refName = line.slice(0, tab)
+      if (!features[refName]) {
+        features[refName] = []
+      }
+      features[refName].push(line)
+    }
+
+    const autoSql = this.getConf('autoSql') as string
+    const parser = new BED({ autoSql })
+    const columnNames = this.getConf('columnNames')
+    const scoreColumn = this.getConf('scoreColumn')
+    const colRef = this.getConf('colRef')
+    const colStart = this.getConf('colStart')
+    const colEnd = this.getConf('colEnd')
+
+    return {
+      header,
+      features,
+      parser,
+      columnNames,
+      scoreColumn,
+      colRef,
+      colStart,
+      colEnd,
+    }
+  }
+
+  private async loadData(opts: BaseOptions = {}) {
+    if (!this.bedFeatures) {
+      this.bedFeatures = this.loadDataP(opts).catch(e => {
+        this.bedFeatures = undefined
+        throw e
+      })
+    }
+
+    return this.bedFeatures
+  }
+
+  public async getRefNames(opts: BaseOptions = {}) {
+    const { features } = await this.loadData(opts)
+    return Object.keys(features)
+  }
+
+  async getHeader(opts: BaseOptions = {}) {
+    const { header } = await this.loadData(opts)
+    return header
+  }
+
+  defaultParser(fields: string[], line: string) {
+    return Object.fromEntries(line.split('\t').map((f, i) => [fields[i], f]))
+  }
+
+  async getNames() {
+    const { header, columnNames } = await this.loadData()
+    if (columnNames.length) {
+      return columnNames
+    }
+    const defs = header.split('\n').filter(f => !!f)
+    const defline = defs[defs.length - 1]
+    return defline?.includes('\t')
+      ? defline
+          .slice(1)
+          .split('\t')
+          .map(field => field.trim())
+      : undefined
+  }
+
+  private async loadFeatureIntervalTreeHelper(refName: string) {
+    const { colRef, colStart, colEnd, features, parser, scoreColumn } =
+      await this.loadData()
+    const lines = features[refName]
+    if (!lines) {
+      return undefined
+    }
+    const names = await this.getNames()
+
+    const intervalTree = new IntervalTree()
+    const ret = lines.map((f, i) => {
+      const uniqueId = `${this.id}-${refName}-${i}`
+      return featureData(
+        f,
+        colRef,
+        colStart,
+        colEnd,
+        scoreColumn,
+        parser,
+        uniqueId,
+        names,
+      )
+    })
+
+    for (let i = 0; i < ret.length; i++) {
+      const obj = ret[i]
+      intervalTree.insert([obj.get('start'), obj.get('end')], obj)
+    }
+    return intervalTree
+  }
+
+  private async loadFeatureIntervalTree(refName: string) {
+    if (!this.intervalTrees[refName]) {
+      this.intervalTrees[refName] = this.loadFeatureIntervalTreeHelper(
+        refName,
+      ).catch(e => {
+        this.intervalTrees[refName] = undefined
+        throw e
+      })
+    }
+    return this.intervalTrees[refName]
+  }
+
+  public getFeatures(query: Region, opts: BaseOptions = {}) {
+    return ObservableCreate<Feature>(async observer => {
+      const { start, end, refName } = query
+      const intervalTree = await this.loadFeatureIntervalTree(refName)
+      intervalTree?.search([start, end]).forEach(f => observer.next(f))
+      observer.complete()
+    }, opts.signal)
+  }
+
+  public freeResources(): void {}
+}
diff --git a/plugins/bed/src/BedAdapter/__snapshots__/BedAdapter.test.ts.snap b/plugins/bed/src/BedAdapter/__snapshots__/BedAdapter.test.ts.snap
new file mode 100644
index 0000000000..d3ebe037c2
--- /dev/null
+++ b/plugins/bed/src/BedAdapter/__snapshots__/BedAdapter.test.ts.snap
@@ -0,0 +1,437 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`adapter can fetch bed with header 1`] = `
+Array [
+  Object {
+    "end": 3009,
+    "refName": "contigA",
+    "start": 3000,
+    "strand": 0,
+    "uniqueId": "test-contigA-0",
+  },
+  Object {
+    "end": 3114,
+    "refName": "contigA",
+    "start": 3105,
+    "strand": 0,
+    "uniqueId": "test-contigA-1",
+  },
+  Object {
+    "end": 3161,
+    "refName": "contigA",
+    "start": 3152,
+    "strand": 0,
+    "uniqueId": "test-contigA-2",
+  },
+  Object {
+    "end": 3180,
+    "refName": "contigA",
+    "start": 3171,
+    "strand": 0,
+    "uniqueId": "test-contigA-3",
+  },
+  Object {
+    "end": 3183,
+    "refName": "contigA",
+    "start": 3174,
+    "strand": 0,
+    "uniqueId": "test-contigA-4",
+  },
+  Object {
+    "end": 3222,
+    "refName": "contigA",
+    "start": 3213,
+    "strand": 0,
+    "uniqueId": "test-contigA-5",
+  },
+  Object {
+    "end": 3474,
+    "refName": "contigA",
+    "start": 3465,
+    "strand": 0,
+    "uniqueId": "test-contigA-6",
+  },
+  Object {
+    "end": 3804,
+    "refName": "contigA",
+    "start": 3795,
+    "strand": 0,
+    "uniqueId": "test-contigA-7",
+  },
+  Object {
+    "end": 4044,
+    "refName": "contigA",
+    "start": 4035,
+    "strand": 0,
+    "uniqueId": "test-contigA-8",
+  },
+  Object {
+    "end": 4082,
+    "refName": "contigA",
+    "start": 4073,
+    "strand": 0,
+    "uniqueId": "test-contigA-9",
+  },
+]
+`;
+
+exports[`adapter can fetch features bed with autosql 1`] = `
+Array [
+  Object {
+    "Entrez_Gene_Id": "2782",
+    "Hugo_Symbol": "GNB1",
+    "Matched_Norm_Sample_Barcode": "TCGA-OR-A5KB-11A-11D-A30A-10",
+    "Reference_Allele": "T",
+    "Tumor_Sample_Barcode": "TCGA-OR-A5KB-01A-11D-A30A-10",
+    "Tumor_Seq_Allele1": "T",
+    "Tumor_Seq_Allele2": "G",
+    "Variant_Classification": "Splice_Region",
+    "Variant_Type": "SNP",
+    "alcohol_history": "--",
+    "alcohol_intensity": "--",
+    "bmi": "--",
+    "case_id": "09454ed6-64bc-4a35-af44-7c4344623d45",
+    "cigarettes_per_day": "--",
+    "days_to_death": "--",
+    "dbSNP_RS": "novel",
+    "dbSNP_Val_Status": "",
+    "end": 10,
+    "ethnicity": "not hispanic or latino",
+    "freq": "0.0108695652174",
+    "gender": "female",
+    "height": "--",
+    "name": "T>G",
+    "project_id": "TCGA-ACC",
+    "refName": "ctgA",
+    "reserved": "0,0,0",
+    "sampleCount": "1",
+    "score": 1,
+    "start": 1,
+    "strand": 0,
+    "subfeatures": Array [
+      Object {
+        "end": 2,
+        "parentId": "test-ctgA-0",
+        "start": 1,
+        "strand": 0,
+        "type": "three_prime_UTR",
+        "uniqueId": "test-ctgA-0-0",
+      },
+    ],
+    "type": "mRNA",
+    "uniqueId": "test-ctgA-0",
+    "weight": "--",
+    "years_smoked": "--",
+  },
+]
+`;
+
+exports[`adapter can fetch features from volvox.sort.bed simple bed3 1`] = `
+Array [
+  Object {
+    "end": 3009,
+    "refName": "contigA",
+    "start": 3000,
+    "strand": 0,
+    "uniqueId": "test-contigA-0",
+  },
+  Object {
+    "end": 3114,
+    "refName": "contigA",
+    "start": 3105,
+    "strand": 0,
+    "uniqueId": "test-contigA-1",
+  },
+  Object {
+    "end": 3161,
+    "refName": "contigA",
+    "start": 3152,
+    "strand": 0,
+    "uniqueId": "test-contigA-2",
+  },
+  Object {
+    "end": 3180,
+    "refName": "contigA",
+    "start": 3171,
+    "strand": 0,
+    "uniqueId": "test-contigA-3",
+  },
+  Object {
+    "end": 3183,
+    "refName": "contigA",
+    "start": 3174,
+    "strand": 0,
+    "uniqueId": "test-contigA-4",
+  },
+  Object {
+    "end": 3222,
+    "refName": "contigA",
+    "start": 3213,
+    "strand": 0,
+    "uniqueId": "test-contigA-5",
+  },
+  Object {
+    "end": 3474,
+    "refName": "contigA",
+    "start": 3465,
+    "strand": 0,
+    "uniqueId": "test-contigA-6",
+  },
+  Object {
+    "end": 3804,
+    "refName": "contigA",
+    "start": 3795,
+    "strand": 0,
+    "uniqueId": "test-contigA-7",
+  },
+  Object {
+    "end": 4044,
+    "refName": "contigA",
+    "start": 4035,
+    "strand": 0,
+    "uniqueId": "test-contigA-8",
+  },
+  Object {
+    "end": 4082,
+    "refName": "contigA",
+    "start": 4073,
+    "strand": 0,
+    "uniqueId": "test-contigA-9",
+  },
+]
+`;
+
+exports[`adapter can fetch features from volvox-bed12.bed 1`] = `
+Array [
+  Object {
+    "end": 9000,
+    "itemRgb": "0,0,0",
+    "name": "EDEN.1",
+    "refName": "ctgA",
+    "score": 1000,
+    "start": 1049,
+    "strand": 1,
+    "subfeatures": Array [
+      Object {
+        "end": 1200,
+        "parentId": "test-ctgA-0",
+        "start": 1049,
+        "strand": 1,
+        "type": "five_prime_UTR",
+        "uniqueId": "test-ctgA-0-0",
+      },
+      Object {
+        "end": 1500,
+        "parentId": "test-ctgA-0",
+        "start": 1200,
+        "strand": 1,
+        "type": "CDS",
+        "uniqueId": "test-ctgA-0-1",
+      },
+      Object {
+        "end": 3902,
+        "parentId": "test-ctgA-0",
+        "start": 2999,
+        "strand": 1,
+        "type": "CDS",
+        "uniqueId": "test-ctgA-0-2",
+      },
+      Object {
+        "end": 5500,
+        "parentId": "test-ctgA-0",
+        "start": 4999,
+        "strand": 1,
+        "type": "CDS",
+        "uniqueId": "test-ctgA-0-3",
+      },
+      Object {
+        "end": 7608,
+        "parentId": "test-ctgA-0",
+        "start": 6999,
+        "strand": 1,
+        "type": "CDS",
+        "uniqueId": "test-ctgA-0-4",
+      },
+      Object {
+        "end": 9000,
+        "parentId": "test-ctgA-0",
+        "start": 7608,
+        "strand": 1,
+        "type": "three_prime_UTR",
+        "uniqueId": "test-ctgA-0-5",
+      },
+    ],
+    "type": "mRNA",
+    "uniqueId": "test-ctgA-0",
+  },
+  Object {
+    "end": 9000,
+    "itemRgb": "0,0,0",
+    "name": "EDEN.2",
+    "refName": "ctgA",
+    "score": 1000,
+    "start": 1049,
+    "strand": 1,
+    "subfeatures": Array [
+      Object {
+        "end": 1200,
+        "parentId": "test-ctgA-1",
+        "start": 1049,
+        "strand": 1,
+        "type": "five_prime_UTR",
+        "uniqueId": "test-ctgA-1-0",
+      },
+      Object {
+        "end": 1500,
+        "parentId": "test-ctgA-1",
+        "start": 1200,
+        "strand": 1,
+        "type": "CDS",
+        "uniqueId": "test-ctgA-1-1",
+      },
+      Object {
+        "end": 5500,
+        "parentId": "test-ctgA-1",
+        "start": 4999,
+        "strand": 1,
+        "type": "CDS",
+        "uniqueId": "test-ctgA-1-2",
+      },
+      Object {
+        "end": 7608,
+        "parentId": "test-ctgA-1",
+        "start": 6999,
+        "strand": 1,
+        "type": "CDS",
+        "uniqueId": "test-ctgA-1-3",
+      },
+      Object {
+        "end": 9000,
+        "parentId": "test-ctgA-1",
+        "start": 7608,
+        "strand": 1,
+        "type": "three_prime_UTR",
+        "uniqueId": "test-ctgA-1-4",
+      },
+    ],
+    "type": "mRNA",
+    "uniqueId": "test-ctgA-1",
+  },
+  Object {
+    "end": 9000,
+    "itemRgb": "0,0,0",
+    "name": "EDEN.3",
+    "refName": "ctgA",
+    "score": 1000,
+    "start": 1299,
+    "strand": 1,
+    "subfeatures": Array [
+      Object {
+        "end": 1500,
+        "parentId": "test-ctgA-2",
+        "start": 1299,
+        "strand": 1,
+        "type": "five_prime_UTR",
+        "uniqueId": "test-ctgA-2-0",
+      },
+      Object {
+        "end": 3300,
+        "parentId": "test-ctgA-2",
+        "start": 2999,
+        "strand": 1,
+        "type": "five_prime_UTR",
+        "uniqueId": "test-ctgA-2-1",
+      },
+      Object {
+        "end": 3902,
+        "parentId": "test-ctgA-2",
+        "start": 3300,
+        "strand": 1,
+        "type": "CDS",
+        "uniqueId": "test-ctgA-2-2",
+      },
+      Object {
+        "end": 5500,
+        "parentId": "test-ctgA-2",
+        "start": 4999,
+        "strand": 1,
+        "type": "CDS",
+        "uniqueId": "test-ctgA-2-3",
+      },
+      Object {
+        "end": 7600,
+        "parentId": "test-ctgA-2",
+        "start": 6999,
+        "strand": 1,
+        "type": "CDS",
+        "uniqueId": "test-ctgA-2-4",
+      },
+      Object {
+        "end": 9000,
+        "parentId": "test-ctgA-2",
+        "start": 7600,
+        "strand": 1,
+        "type": "three_prime_UTR",
+        "uniqueId": "test-ctgA-2-5",
+      },
+    ],
+    "type": "mRNA",
+    "uniqueId": "test-ctgA-2",
+  },
+  Object {
+    "end": 23000,
+    "itemRgb": "0,0,0",
+    "name": "rna-Apple3",
+    "refName": "ctgA",
+    "score": 1000,
+    "start": 17399,
+    "strand": 1,
+    "subfeatures": Array [
+      Object {
+        "end": 17999,
+        "parentId": "test-ctgA-3",
+        "start": 17399,
+        "strand": 1,
+        "type": "five_prime_UTR",
+        "uniqueId": "test-ctgA-3-0",
+      },
+      Object {
+        "end": 18800,
+        "parentId": "test-ctgA-3",
+        "start": 17999,
+        "strand": 1,
+        "type": "CDS",
+        "uniqueId": "test-ctgA-3-1",
+      },
+      Object {
+        "end": 19500,
+        "parentId": "test-ctgA-3",
+        "start": 18999,
+        "strand": 1,
+        "type": "CDS",
+        "uniqueId": "test-ctgA-3-2",
+      },
+      Object {
+        "end": 21200,
+        "parentId": "test-ctgA-3",
+        "start": 20999,
+        "strand": 1,
+        "type": "CDS",
+        "uniqueId": "test-ctgA-3-3",
+      },
+      Object {
+        "end": 23000,
+        "parentId": "test-ctgA-3",
+        "start": 21200,
+        "strand": 1,
+        "type": "three_prime_UTR",
+        "uniqueId": "test-ctgA-3-4",
+      },
+    ],
+    "type": "mRNA",
+    "uniqueId": "test-ctgA-3",
+  },
+]
+`;
+
+exports[`adapter can use gwas header 1`] = `Array []`;
diff --git a/plugins/bed/src/BedAdapter/configSchema.ts b/plugins/bed/src/BedAdapter/configSchema.ts
new file mode 100644
index 0000000000..3f90262d40
--- /dev/null
+++ b/plugins/bed/src/BedAdapter/configSchema.ts
@@ -0,0 +1,45 @@
+import { ConfigurationSchema } from '@jbrowse/core/configuration'
+
+export default ConfigurationSchema(
+  'BedAdapter',
+  {
+    bedLocation: {
+      type: 'fileLocation',
+      defaultValue: { uri: '/path/to/my.bed.gz', locationType: 'UriLocation' },
+    },
+
+    columnNames: {
+      type: 'stringArray',
+      description: 'List of column names',
+      defaultValue: [],
+    },
+
+    scoreColumn: {
+      type: 'string',
+      description: 'The column to use as a "score" attribute',
+      defaultValue: '',
+    },
+
+    autoSql: {
+      type: 'string',
+      description: 'The autoSql definition for the data fields in the file',
+      defaultValue: '',
+    },
+    colRef: {
+      type: 'number',
+      description: 'The column to use as a "refName" attribute',
+      defaultValue: 0,
+    },
+    colStart: {
+      type: 'number',
+      description: 'The column to use as a "start" attribute',
+      defaultValue: 1,
+    },
+    colEnd: {
+      type: 'number',
+      description: 'The column to use as a "end" attribute',
+      defaultValue: 2,
+    },
+  },
+  { explicitlyTyped: true },
+)
diff --git a/plugins/bed/src/BedAdapter/index.ts b/plugins/bed/src/BedAdapter/index.ts
new file mode 100644
index 0000000000..7703441d29
--- /dev/null
+++ b/plugins/bed/src/BedAdapter/index.ts
@@ -0,0 +1 @@
+export { default as configSchema } from './configSchema'
diff --git a/plugins/bed/src/BedAdapter/test_data/gwas.bed b/plugins/bed/src/BedAdapter/test_data/gwas.bed
new file mode 100644
index 0000000000..8f0f6191ce
--- /dev/null
+++ b/plugins/bed/src/BedAdapter/test_data/gwas.bed
@@ -0,0 +1,20 @@
+#chrom	pos	rsid	ref	alt	neg_log_pvalue	beta	stderr_beta	alt_allele_freq
+1	721290	rs12565286	G	C	0.275233	.	.	.
+1	752566	rs3094315	G	A	0.0315638	.	.	.
+1	775659	rs2905035	A	G	0.183626	.	.	.
+1	777122	rs2980319	A	T	0.207258	.	.	.
+1	779322	rs4040617	A	G	0.0326393	.	.	.
+1	780785	rs2977612	T	A	0.0225965	.	.	.
+1	785050	rs2905062	G	A	0.0346572	.	.	.
+1	785989	rs2980300	T	C	0.00638744	.	.	.
+1	798959	rs11240777	G	A	0.49853	.	.	.
+1	990380	.	C	A,G,T	0.136915	.	.	.
+1	998501	rs3813193	G	C	0.450384	.	.	.
+1	1003629	rs4075116	C	T	0.881074	.	.	.
+1	1005806	rs3934834	C	T	0.756218	.	.	.
+1	1017170	rs3766193	C	G	0.336111	.	.	.
+1	1017197	rs3766192	C	T	0.381743	.	.	.
+1	1017587	rs3766191	C	T	0.775467	.	.	.
+1	1018562	rs9442371	C	T	0.233364	.	.	.
+1	1018704	rs9442372	A	G	0.248721	.	.	.
+1	1021346	rs10907177	A	G	0.842846	.	.	.
diff --git a/plugins/bed/src/BedAdapter/test_data/volvox-autosql.bed b/plugins/bed/src/BedAdapter/test_data/volvox-autosql.bed
new file mode 100644
index 0000000000..4bc6378578
--- /dev/null
+++ b/plugins/bed/src/BedAdapter/test_data/volvox-autosql.bed
@@ -0,0 +1 @@
+ctgA	1	10	T>G	1	.	1815756	1815757	0,0,0	1	1	0	1	0.0108695652174	GNB1	2782	Splice_Region	SNP	T	T	G	novel		--	--	--	--	--	--	--	--	female	TCGA-ACC	not hispanic or latino	TCGA-OR-A5KB-01A-11D-A30A-10	TCGA-OR-A5KB-11A-11D-A30A-10	09454ed6-64bc-4a35-af44-7c4344623d45
diff --git a/plugins/bed/src/BedAdapter/test_data/volvox-bed12.bed b/plugins/bed/src/BedAdapter/test_data/volvox-bed12.bed
new file mode 100644
index 0000000000..1b08fb2b49
--- /dev/null
+++ b/plugins/bed/src/BedAdapter/test_data/volvox-bed12.bed
@@ -0,0 +1,4 @@
+ctgA	1049	9000	EDEN.1	1000	+	1200	7608	0,0,0	4	451,903,501,2001	0,1950,3950,5950	EDEN	EDEN	-	-	-
+ctgA	1049	9000	EDEN.2	1000	+	1200	7608	0,0,0	3	451,501,2001	0,3950,5950	EDEN	EDEN	-	-	-
+ctgA	1299	9000	EDEN.3	1000	+	3300	7600	0,0,0	4	201,903,501,2001	0,1700,3700,5700	EDEN	EDEN	-	-	-
+ctgA	17399	23000	rna-Apple3	1000	+	17999	21200	0,0,0	3	1401,501,2001	0,1600,3600	rna-Apple3	rna-Apple3	-	-	-
diff --git a/plugins/bed/src/BedAdapter/test_data/volvox.sort.bed b/plugins/bed/src/BedAdapter/test_data/volvox.sort.bed
new file mode 100644
index 0000000000..4024add388
--- /dev/null
+++ b/plugins/bed/src/BedAdapter/test_data/volvox.sort.bed
@@ -0,0 +1,109 @@
+contigA	3000	3009
+contigA	3105	3114
+contigA	3152	3161
+contigA	3171	3180
+contigA	3174	3183
+contigA	3213	3222
+contigA	3465	3474
+contigA	3795	3804
+contigA	4035	4044
+contigA	4073	4082
+contigA	4074	4083
+contigA	4166	4175
+contigA	4179	4188
+contigA	4204	4213
+contigA	4248	4257
+contigA	4260	4269
+contigA	4577	4586
+contigA	4828	4837
+contigA	4901	4910
+contigA	5006	5015
+contigA	5051	5060
+contigA	5201	5210
+contigA	5260	5269
+contigA	5281	5290
+contigA	5349	5358
+contigA	5353	5362
+contigA	5423	5432
+contigA	5457	5466
+contigA	5548	5557
+contigA	5626	5635
+contigA	5835	5844
+contigA	5909	5918
+contigA	5927	5936
+contigA	5969	5978
+contigA	6070	6079
+contigA	6185	6194
+contigA	6285	6294
+contigA	6363	6372
+contigA	6559	6568
+contigA	6834	6843
+contigA	6908	6917
+contigA	6918	6927
+contigA	7141	7150
+contigA	7173	7182
+contigA	7569	7578
+contigA	7619	7628
+contigA	7654	7663
+contigA	7671	7680
+contigA	7707	7716
+contigA	7739	7748
+contigA	8077	8086
+contigA	8128	8137
+contigA	8132	8141
+contigA	8210	8219
+contigA	8267	8276
+contigA	8328	8337
+contigA	8524	8533
+contigA	8659	8668
+contigA	8660	8669
+contigA	8742	8751
+contigA	8811	8820
+contigA	8816	8825
+contigA	8964	8973
+contigA	9048	9057
+contigA	9054	9063
+contigA	9136	9145
+contigA	9243	9252
+contigA	9320	9329
+contigA	9366	9375
+contigA	9525	9534
+contigA	9580	9589
+contigA	9610	9619
+contigA	9744	9753
+contigA	9753	9762
+contigA	9759	9768
+contigA	9807	9816
+contigA	9853	9862
+contigA	9884	9893
+contigA	9920	9929
+contigA	10043	10052
+contigA	10216	10225
+contigA	10217	10226
+contigA	10252	10261
+contigA	10384	10393
+contigA	10498	10507
+contigA	10585	10594
+contigA	10684	10693
+contigA	10781	10790
+contigA	10875	10884
+contigA	11004	11013
+contigA	11095	11104
+contigA	11182	11191
+contigA	11207	11216
+contigA	11241	11250
+contigA	11335	11344
+contigA	11340	11349
+contigA	11535	11544
+contigA	11543	11552
+contigA	11549	11558
+contigA	11653	11662
+contigA	11675	11684
+contigA	11689	11698
+contigA	11774	11783
+contigA	11832	11841
+contigA	12386	12395
+contigA	12408	12417
+contigA	12441	12450
+contigA	12530	12539
+contigA	12738	12747
diff --git a/plugins/bed/src/BedAdapter/test_data/volvox.sort.with.header.bed b/plugins/bed/src/BedAdapter/test_data/volvox.sort.with.header.bed
new file mode 100644
index 0000000000..215d294bdb
--- /dev/null
+++ b/plugins/bed/src/BedAdapter/test_data/volvox.sort.with.header.bed
@@ -0,0 +1,121 @@
+#this is a test header
+#this is a test header
+#this is a test header
+#this is a test header
+#this is a test header
+#this is a test header
+#this is a test header
+#this is a test header
+#this is a test header
+#this is a test header
+#this is a test header
+#this is a test header
+contigA	3000	3009
+contigA	3105	3114
+contigA	3152	3161
+contigA	3171	3180
+contigA	3174	3183
+contigA	3213	3222
+contigA	3465	3474
+contigA	3795	3804
+contigA	4035	4044
+contigA	4073	4082
+contigA	4074	4083
+contigA	4166	4175
+contigA	4179	4188
+contigA	4204	4213
+contigA	4248	4257
+contigA	4260	4269
+contigA	4577	4586
+contigA	4828	4837
+contigA	4901	4910
+contigA	5006	5015
+contigA	5051	5060
+contigA	5201	5210
+contigA	5260	5269
+contigA	5281	5290
+contigA	5349	5358
+contigA	5353	5362
+contigA	5423	5432
+contigA	5457	5466
+contigA	5548	5557
+contigA	5626	5635
+contigA	5835	5844
+contigA	5909	5918
+contigA	5927	5936
+contigA	5969	5978
+contigA	6070	6079
+contigA	6185	6194
+contigA	6285	6294
+contigA	6363	6372
+contigA	6559	6568
+contigA	6834	6843
+contigA	6908	6917
+contigA	6918	6927
+contigA	7141	7150
+contigA	7173	7182
+contigA	7569	7578
+contigA	7619	7628
+contigA	7654	7663
+contigA	7671	7680
+contigA	7707	7716
+contigA	7739	7748
+contigA	8077	8086
+contigA	8128	8137
+contigA	8132	8141
+contigA	8210	8219
+contigA	8267	8276
+contigA	8328	8337
+contigA	8524	8533
+contigA	8659	8668
+contigA	8660	8669
+contigA	8742	8751
+contigA	8811	8820
+contigA	8816	8825
+contigA	8964	8973
+contigA	9048	9057
+contigA	9054	9063
+contigA	9136	9145
+contigA	9243	9252
+contigA	9320	9329
+contigA	9366	9375
+contigA	9525	9534
+contigA	9580	9589
+contigA	9610	9619
+contigA	9744	9753
+contigA	9753	9762
+contigA	9759	9768
+contigA	9807	9816
+contigA	9853	9862
+contigA	9884	9893
+contigA	9920	9929
+contigA	10043	10052
+contigA	10216	10225
+contigA	10217	10226
+contigA	10252	10261
+contigA	10384	10393
+contigA	10498	10507
+contigA	10585	10594
+contigA	10684	10693
+contigA	10781	10790
+contigA	10875	10884
+contigA	11004	11013
+contigA	11095	11104
+contigA	11182	11191
+contigA	11207	11216
+contigA	11241	11250
+contigA	11335	11344
+contigA	11340	11349
+contigA	11535	11544
+contigA	11543	11552
+contigA	11549	11558
+contigA	11653	11662
+contigA	11675	11684
+contigA	11689	11698
+contigA	11774	11783
+contigA	11832	11841
+contigA	12386	12395
+contigA	12408	12417
+contigA	12441	12450
+contigA	12530	12539
+contigA	12738	12747
diff --git a/plugins/bed/src/BedTabixAdapter/BedTabixAdapter.ts b/plugins/bed/src/BedTabixAdapter/BedTabixAdapter.ts
index d10a7aee18..4e1ff9742d 100644
--- a/plugins/bed/src/BedTabixAdapter/BedTabixAdapter.ts
+++ b/plugins/bed/src/BedTabixAdapter/BedTabixAdapter.ts
@@ -4,15 +4,13 @@ import {
   BaseFeatureDataAdapter,
   BaseOptions,
 } from '@jbrowse/core/data_adapters/BaseAdapter'
-import { FileLocation, Region } from '@jbrowse/core/util/types'
 import { openLocation } from '@jbrowse/core/util/io'
 import { ObservableCreate } from '@jbrowse/core/util/rxjs'
-import SimpleFeature, { Feature } from '@jbrowse/core/util/simpleFeature'
+import { FileLocation, Region, Feature } from '@jbrowse/core/util'
 import { TabixIndexedFile } from '@gmod/tabix'
-import { readConfObject } from '@jbrowse/core/configuration'
-import { ucscProcessedTranscript } from '../util'
+import { featureData } from '../util'
 import PluginManager from '@jbrowse/core/PluginManager'
-import { AnyConfigurationModel } from '@jbrowse/core/configuration/configurationSchema'
+import { AnyConfigurationModel } from '@jbrowse/core/configuration'
 import { getSubAdapterType } from '@jbrowse/core/data_adapters/dataAdapterCache'
 
 export default class BedTabixAdapter extends BaseFeatureDataAdapter {
@@ -32,31 +30,20 @@ export default class BedTabixAdapter extends BaseFeatureDataAdapter {
     pluginManager?: PluginManager,
   ) {
     super(config, getSubAdapter, pluginManager)
-    const bedGzLocation = readConfObject(
-      config,
-      'bedGzLocation',
-    ) as FileLocation
-    const index = readConfObject(config, 'index') as {
-      indexType?: string
-      location: FileLocation
-    }
-    const autoSql = readConfObject(config, 'autoSql') as string
-    const { location, indexType } = index
+    const bedGzLoc = this.getConf('bedGzLocation') as FileLocation
+    const type = this.getConf(['index', 'indexType'])
+    const loc = this.getConf(['index', 'location'])
+    const autoSql = this.getConf('autoSql')
+    const pm = this.pluginManager
 
     this.bed = new TabixIndexedFile({
-      filehandle: openLocation(bedGzLocation, this.pluginManager),
-      csiFilehandle:
-        indexType === 'CSI'
-          ? openLocation(location, this.pluginManager)
-          : undefined,
-      tbiFilehandle:
-        indexType !== 'CSI'
-          ? openLocation(location, this.pluginManager)
-          : undefined,
+      filehandle: openLocation(bedGzLoc, pm),
+      csiFilehandle: type === 'CSI' ? openLocation(loc, pm) : undefined,
+      tbiFilehandle: type !== 'CSI' ? openLocation(loc, pm) : undefined,
       chunkCacheSize: 50 * 2 ** 20,
     })
-    this.columnNames = readConfObject(config, 'columnNames')
-    this.scoreColumn = readConfObject(config, 'scoreColumn')
+    this.columnNames = this.getConf('columnNames')
+    this.scoreColumn = this.getConf('scoreColumn')
     this.parser = new BED({ autoSql })
   }
 
@@ -68,10 +55,6 @@ export default class BedTabixAdapter extends BaseFeatureDataAdapter {
     return this.bed.getHeader()
   }
 
-  defaultParser(fields: string[], line: string) {
-    return Object.fromEntries(line.split('\t').map((f, i) => [fields[i], f]))
-  }
-
   async getNames() {
     if (this.columnNames.length) {
       return this.columnNames
@@ -97,55 +80,21 @@ export default class BedTabixAdapter extends BaseFeatureDataAdapter {
       // colSame handles special case for tabix where a single column is both
       // the start and end, this is assumed to be covering the base at this
       // position (e.g. tabix -s 1 -b 2 -e 2) begin and end are same
-      const colSame = colStart === colEnd ? 1 : 0
       const names = await this.getNames()
       await this.bed.getLines(query.refName, query.start, query.end, {
-        lineCallback: (line: string, fileOffset: number) => {
-          const l = line.split('\t')
-          const refName = l[colRef]
-          const start = +l[colStart]
-
-          const end = +l[colEnd] + colSame
-          const uniqueId = `${this.id}-${fileOffset}`
-          const data = names
-            ? this.defaultParser(names, line)
-            : this.parser.parseLine(line, { uniqueId })
-
-          const { blockCount, blockSizes, blockStarts, chromStarts } = data
-
-          if (blockCount) {
-            const starts = chromStarts || blockStarts || []
-            const sizes = blockSizes
-            const blocksOffset = start
-            data.subfeatures = []
-
-            for (let b = 0; b < blockCount; b += 1) {
-              const bmin = (starts[b] || 0) + blocksOffset
-              const bmax = bmin + (sizes[b] || 0)
-              data.subfeatures.push({
-                uniqueId: `${uniqueId}-${b}`,
-                start: bmin,
-                end: bmax,
-                type: 'block',
-              })
-            }
-          }
-
-          if (this.scoreColumn) {
-            data.score = +data[this.scoreColumn]
-          }
-          delete data.chrom
-          delete data.chromStart
-          delete data.chromEnd
-          const f = new SimpleFeature({
-            ...data,
-            start,
-            end,
-            refName,
-            uniqueId,
-          })
-          const r = f.get('thickStart') ? ucscProcessedTranscript(f) : f
-          observer.next(r)
+        lineCallback: (line, fileOffset) => {
+          observer.next(
+            featureData(
+              line,
+              colRef,
+              colStart,
+              colEnd,
+              this.scoreColumn,
+              this.parser,
+              `${this.id}-${fileOffset}`,
+              names,
+            ),
+          )
         },
         signal: opts.signal,
       })
diff --git a/plugins/bed/src/index.ts b/plugins/bed/src/index.ts
index 00bfc6441d..0ed1c2890d 100644
--- a/plugins/bed/src/index.ts
+++ b/plugins/bed/src/index.ts
@@ -3,12 +3,13 @@ import Plugin from '@jbrowse/core/Plugin'
 import PluginManager from '@jbrowse/core/PluginManager'
 import { configSchema as bigBedAdapterConfigSchema } from './BigBedAdapter'
 import { configSchema as bedTabixAdapterConfigSchema } from './BedTabixAdapter'
+import { configSchema as bedAdapterConfigSchema } from './BedAdapter'
 import { FileLocation } from '@jbrowse/core/util/types'
 import {
+  getFileName,
   makeIndex,
   makeIndexType,
   AdapterGuesser,
-  getFileName,
 } from '@jbrowse/core/util/tracks'
 
 export default class BedPlugin extends Plugin {
@@ -59,6 +60,16 @@ export default class BedPlugin extends Plugin {
             import('./BedTabixAdapter/BedTabixAdapter').then(r => r.default),
         }),
     )
+
+    pluginManager.addAdapterType(
+      () =>
+        new AdapterType({
+          name: 'BedAdapter',
+          configSchema: bedAdapterConfigSchema,
+          getAdapterClass: () =>
+            import('./BedAdapter/BedAdapter').then(r => r.default),
+        }),
+    )
     pluginManager.addToExtensionPoint(
       'Core-guessAdapterForLocation',
       (adapterGuesser: AdapterGuesser) => {
@@ -85,5 +96,27 @@ export default class BedPlugin extends Plugin {
         }
       },
     )
+
+    pluginManager.addToExtensionPoint(
+      'Core-guessAdapterForLocation',
+      (adapterGuesser: AdapterGuesser) => {
+        return (
+          file: FileLocation,
+          index?: FileLocation,
+          adapterHint?: string,
+        ) => {
+          const regexGuess = /\.bed$/i
+          const adapterName = 'BedAdapter'
+          const fileName = getFileName(file)
+          if (regexGuess.test(fileName) || adapterHint === adapterName) {
+            return {
+              type: adapterName,
+              bedLocation: file,
+            }
+          }
+          return adapterGuesser(file, index, adapterHint)
+        }
+      },
+    )
   }
 }
diff --git a/plugins/bed/src/util.ts b/plugins/bed/src/util.ts
index 009c3c2ca0..cf57bcde92 100644
--- a/plugins/bed/src/util.ts
+++ b/plugins/bed/src/util.ts
@@ -1,4 +1,5 @@
-import SimpleFeature, { Feature } from '@jbrowse/core/util/simpleFeature'
+import { SimpleFeature, Feature } from '@jbrowse/core/util'
+import BED from '@gmod/bed'
 
 export function ucscProcessedTranscript(feature: Feature) {
   const children = feature.children()
@@ -97,11 +98,9 @@ export function ucscProcessedTranscript(feature: Feature) {
       })
     }
   })
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any
-  const newData: Record<string, any> = {}
-  feature.tags().forEach(tag => {
-    newData[tag] = feature.get(tag)
-  })
+  const newData = Object.fromEntries(
+    feature.tags().map(tag => [tag, feature.get(tag)]),
+  )
   newData.subfeatures = newChildren
   newData.type = 'mRNA'
   newData.uniqueId = feature.id()
@@ -120,3 +119,63 @@ export function ucscProcessedTranscript(feature: Feature) {
   })
   return newFeature
 }
+
+function defaultParser(fields: string[], line: string) {
+  return Object.fromEntries(line.split('\t').map((f, i) => [fields[i], f]))
+}
+
+export function featureData(
+  line: string,
+  colRef: number,
+  colStart: number,
+  colEnd: number,
+  scoreColumn: string,
+  parser: typeof BED,
+  uniqueId: string,
+  names?: string[],
+) {
+  const l = line.split('\t')
+  const refName = l[colRef]
+  const start = +l[colStart]
+  const colSame = colStart === colEnd ? 1 : 0
+
+  const end = +l[colEnd] + colSame
+  const data = names
+    ? defaultParser(names, line)
+    : parser.parseLine(line, { uniqueId })
+
+  const { blockCount, blockSizes, blockStarts, chromStarts } = data
+
+  if (blockCount) {
+    const starts = chromStarts || blockStarts || []
+    const sizes = blockSizes
+    const blocksOffset = start
+    data.subfeatures = []
+
+    for (let b = 0; b < blockCount; b += 1) {
+      const bmin = (starts[b] || 0) + blocksOffset
+      const bmax = bmin + (sizes[b] || 0)
+      data.subfeatures.push({
+        uniqueId: `${uniqueId}-${b}`,
+        start: bmin,
+        end: bmax,
+        type: 'block',
+      })
+    }
+  }
+
+  if (scoreColumn) {
+    data.score = +data[scoreColumn]
+  }
+  delete data.chrom
+  delete data.chromStart
+  delete data.chromEnd
+  const f = new SimpleFeature({
+    ...data,
+    start,
+    end,
+    refName,
+    uniqueId,
+  })
+  return f.get('thickStart') ? ucscProcessedTranscript(f) : f
+}
diff --git a/plugins/gff3/src/Gff3Adapter/Gff3Adapter.ts b/plugins/gff3/src/Gff3Adapter/Gff3Adapter.ts
index 38c597fe15..883ae4fc5a 100644
--- a/plugins/gff3/src/Gff3Adapter/Gff3Adapter.ts
+++ b/plugins/gff3/src/Gff3Adapter/Gff3Adapter.ts
@@ -3,7 +3,6 @@ import {
   BaseOptions,
 } from '@jbrowse/core/data_adapters/BaseAdapter'
 import { NoAssemblyRegion } from '@jbrowse/core/util/types'
-import { readConfObject } from '@jbrowse/core/configuration'
 import { openLocation } from '@jbrowse/core/util/io'
 import { ObservableCreate } from '@jbrowse/core/util/rxjs'
 import IntervalTree from '@flatten-js/interval-tree'
@@ -23,16 +22,14 @@ export default class extends BaseFeatureDataAdapter {
   }>
 
   private async loadDataP() {
-    const buffer = await openLocation(
-      readConfObject(this.config, 'gffLocation'),
-      this.pluginManager,
-    ).readFile()
-    const buf = isGzip(buffer) ? await unzip(buffer) : buffer
+    const pm = this.pluginManager
+    const buf = await openLocation(this.getConf('gffLocation'), pm).readFile()
+    const buffer = isGzip(buf) ? await unzip(buf) : buf
     // 512MB  max chrome string length is 512MB
-    if (buf.length > 536_870_888) {
+    if (buffer.length > 536_870_888) {
       throw new Error('Data exceeds maximum string length (512MB)')
     }
-    const data = new TextDecoder('utf8', { fatal: true }).decode(buf)
+    const data = new TextDecoder('utf8', { fatal: true }).decode(buffer)
     const lines = data.split('\n')
     const headerLines = []
     for (let i = 0; i < lines.length && lines[i].startsWith('#'); i++) {
diff --git a/plugins/gtf/src/GtfAdapter/GtfAdapter.ts b/plugins/gtf/src/GtfAdapter/GtfAdapter.ts
index a71abbcc48..c08f51f2b4 100644
--- a/plugins/gtf/src/GtfAdapter/GtfAdapter.ts
+++ b/plugins/gtf/src/GtfAdapter/GtfAdapter.ts
@@ -23,11 +23,9 @@ export default class extends BaseFeatureDataAdapter {
     [key: string]: Promise<IntervalTree | undefined> | undefined
   } = {}
 
-  private async loadDataP() {
-    const buffer = await openLocation(
-      this.getConf('gtfLocation'),
-      this.pluginManager,
-    ).readFile()
+  private async loadDataP(opts: BaseOptions = {}) {
+    const gtfLoc = this.getConf('gtfLocation')
+    const buffer = await openLocation(gtfLoc, this.pluginManager).readFile(opts)
 
     const buf = isGzip(buffer) ? await unzip(buffer) : buffer
     // 512MB  max chrome string length is 512MB
@@ -39,7 +37,12 @@ export default class extends BaseFeatureDataAdapter {
     const lines = data.split('\n').filter(f => !!f && !f.startsWith('#'))
     const feats = {} as { [key: string]: string[] }
     for (let i = 0; i < lines.length; i++) {
-      const refName = lines[i].split('\t')[0]
+      const line = lines[i]
+      if (line.startsWith('#')) {
+        continue
+      }
+      const tab = line.indexOf('\t')
+      const refName = line.slice(0, tab)
       if (!feats[refName]) {
         feats[refName] = []
       }
@@ -49,9 +52,9 @@ export default class extends BaseFeatureDataAdapter {
     return { feats }
   }
 
-  private async loadData() {
+  private async loadData(opts: BaseOptions = {}) {
     if (!this.gtfFeatures) {
-      this.gtfFeatures = this.loadDataP().catch(e => {
+      this.gtfFeatures = this.loadDataP(opts).catch(e => {
         this.gtfFeatures = undefined
         throw e
       })
@@ -61,7 +64,7 @@ export default class extends BaseFeatureDataAdapter {
   }
 
   public async getRefNames(opts: BaseOptions = {}) {
-    const { feats } = await this.loadData()
+    const { feats } = await this.loadData(opts)
     return Object.keys(feats)
   }
 
@@ -83,7 +86,7 @@ export default class extends BaseFeatureDataAdapter {
       (f, i) =>
         new SimpleFeature({
           data: featureData(f),
-          id: `${this.id}-offset-${i}`,
+          id: `${this.id}-${refName}-${i}`,
         }),
     )
 
diff --git a/plugins/gtf/src/GtfAdapter/__snapshots__/GtfAdapter.test.ts.snap b/plugins/gtf/src/GtfAdapter/__snapshots__/GtfAdapter.test.ts.snap
index 60bba240e6..6a065accdf 100644
--- a/plugins/gtf/src/GtfAdapter/__snapshots__/GtfAdapter.test.ts.snap
+++ b/plugins/gtf/src/GtfAdapter/__snapshots__/GtfAdapter.test.ts.snap
@@ -18,7 +18,7 @@ Array [
         "gene_id": "EDEN",
         "gene_name": "EDEN",
         "name": "EDEN.1",
-        "parentId": "test-offset-0",
+        "parentId": "test-ctgA-0",
         "phase": 0,
         "refName": "ctgA",
         "source": "example",
@@ -26,14 +26,14 @@ Array [
         "strand": 1,
         "transcript_id": "EDEN.1",
         "type": "exon",
-        "uniqueId": "test-offset-0-0",
+        "uniqueId": "test-ctgA-0-0",
       },
       Object {
         "end": 1200,
         "gene_id": "EDEN",
         "gene_name": "EDEN",
         "name": "EDEN.1",
-        "parentId": "test-offset-0",
+        "parentId": "test-ctgA-0",
         "phase": 0,
         "refName": "ctgA",
         "source": "example",
@@ -41,14 +41,14 @@ Array [
         "strand": 1,
         "transcript_id": "EDEN.1",
         "type": "five_prime_UTR",
-        "uniqueId": "test-offset-0-1",
+        "uniqueId": "test-ctgA-0-1",
       },
       Object {
         "end": 1500,
         "gene_id": "EDEN",
         "gene_name": "EDEN",
         "name": "EDEN.1",
-        "parentId": "test-offset-0",
+        "parentId": "test-ctgA-0",
         "phase": 0,
         "refName": "ctgA",
         "source": "example",
@@ -56,14 +56,14 @@ Array [
         "strand": 1,
         "transcript_id": "EDEN.1",
         "type": "CDS",
-        "uniqueId": "test-offset-0-2",
+        "uniqueId": "test-ctgA-0-2",
       },
       Object {
         "end": 3902,
         "gene_id": "EDEN",
         "gene_name": "EDEN",
         "name": "EDEN.1",
-        "parentId": "test-offset-0",
+        "parentId": "test-ctgA-0",
         "phase": 0,
         "refName": "ctgA",
         "source": "example",
@@ -71,14 +71,14 @@ Array [
         "strand": 1,
         "transcript_id": "EDEN.1",
         "type": "CDS",
-        "uniqueId": "test-offset-0-3",
+        "uniqueId": "test-ctgA-0-3",
       },
       Object {
         "end": 3902,
         "gene_id": "EDEN",
         "gene_name": "EDEN",
         "name": "EDEN.1",
-        "parentId": "test-offset-0",
+        "parentId": "test-ctgA-0",
         "phase": 0,
         "refName": "ctgA",
         "source": "example",
@@ -86,14 +86,14 @@ Array [
         "strand": 1,
         "transcript_id": "EDEN.1",
         "type": "exon",
-        "uniqueId": "test-offset-0-4",
+        "uniqueId": "test-ctgA-0-4",
       },
       Object {
         "end": 5500,
         "gene_id": "EDEN",
         "gene_name": "EDEN",
         "name": "EDEN.1",
-        "parentId": "test-offset-0",
+        "parentId": "test-ctgA-0",
         "phase": 0,
         "refName": "ctgA",
         "source": "example",
@@ -101,14 +101,14 @@ Array [
         "strand": 1,
         "transcript_id": "EDEN.1",
         "type": "CDS",
-        "uniqueId": "test-offset-0-5",
+        "uniqueId": "test-ctgA-0-5",
       },
       Object {
         "end": 5500,
         "gene_id": "EDEN",
         "gene_name": "EDEN",
         "name": "EDEN.1",
-        "parentId": "test-offset-0",
+        "parentId": "test-ctgA-0",
         "phase": 0,
         "refName": "ctgA",
         "source": "example",
@@ -116,14 +116,14 @@ Array [
         "strand": 1,
         "transcript_id": "EDEN.1",
         "type": "exon",
-        "uniqueId": "test-offset-0-6",
+        "uniqueId": "test-ctgA-0-6",
       },
       Object {
         "end": 7608,
         "gene_id": "EDEN",
         "gene_name": "EDEN",
         "name": "EDEN.1",
-        "parentId": "test-offset-0",
+        "parentId": "test-ctgA-0",
         "phase": 0,
         "refName": "ctgA",
         "source": "example",
@@ -131,14 +131,14 @@ Array [
         "strand": 1,
         "transcript_id": "EDEN.1",
         "type": "CDS",
-        "uniqueId": "test-offset-0-7",
+        "uniqueId": "test-ctgA-0-7",
       },
       Object {
         "end": 9000,
         "gene_id": "EDEN",
         "gene_name": "EDEN",
         "name": "EDEN.1",
-        "parentId": "test-offset-0",
+        "parentId": "test-ctgA-0",
         "phase": 0,
         "refName": "ctgA",
         "source": "example",
@@ -146,14 +146,14 @@ Array [
         "strand": 1,
         "transcript_id": "EDEN.1",
         "type": "exon",
-        "uniqueId": "test-offset-0-8",
+        "uniqueId": "test-ctgA-0-8",
       },
       Object {
         "end": 9000,
         "gene_id": "EDEN",
         "gene_name": "EDEN",
         "name": "EDEN.1",
-        "parentId": "test-offset-0",
+        "parentId": "test-ctgA-0",
         "phase": 0,
         "refName": "ctgA",
         "source": "example",
@@ -161,12 +161,12 @@ Array [
         "strand": 1,
         "transcript_id": "EDEN.1",
         "type": "three_prime_UTR",
-        "uniqueId": "test-offset-0-9",
+        "uniqueId": "test-ctgA-0-9",
       },
     ],
     "transcript_id": "EDEN.1",
     "type": "transcript",
-    "uniqueId": "test-offset-0",
+    "uniqueId": "test-ctgA-0",
   },
   Object {
     "end": 9000,
@@ -184,7 +184,7 @@ Array [
         "gene_id": "EDEN",
         "gene_name": "EDEN",
         "name": "EDEN.2",
-        "parentId": "test-offset-1",
+        "parentId": "test-ctgA-1",
         "phase": 0,
         "refName": "ctgA",
         "source": "example",
@@ -192,14 +192,14 @@ Array [
         "strand": 1,
         "transcript_id": "EDEN.2",
         "type": "exon",
-        "uniqueId": "test-offset-1-0",
+        "uniqueId": "test-ctgA-1-0",
       },
       Object {
         "end": 1200,
         "gene_id": "EDEN",
         "gene_name": "EDEN",
         "name": "EDEN.2",
-        "parentId": "test-offset-1",
+        "parentId": "test-ctgA-1",
         "phase": 0,
         "refName": "ctgA",
         "source": "example",
@@ -207,14 +207,14 @@ Array [
         "strand": 1,
         "transcript_id": "EDEN.2",
         "type": "five_prime_UTR",
-        "uniqueId": "test-offset-1-1",
+        "uniqueId": "test-ctgA-1-1",
       },
       Object {
         "end": 1500,
         "gene_id": "EDEN",
         "gene_name": "EDEN",
         "name": "EDEN.2",
-        "parentId": "test-offset-1",
+        "parentId": "test-ctgA-1",
         "phase": 0,
         "refName": "ctgA",
         "source": "example",
@@ -222,14 +222,14 @@ Array [
         "strand": 1,
         "transcript_id": "EDEN.2",
         "type": "CDS",
-        "uniqueId": "test-offset-1-2",
+        "uniqueId": "test-ctgA-1-2",
       },
       Object {
         "end": 5500,
         "gene_id": "EDEN",
         "gene_name": "EDEN",
         "name": "EDEN.2",
-        "parentId": "test-offset-1",
+        "parentId": "test-ctgA-1",
         "phase": 0,
         "refName": "ctgA",
         "source": "example",
@@ -237,14 +237,14 @@ Array [
         "strand": 1,
         "transcript_id": "EDEN.2",
         "type": "CDS",
-        "uniqueId": "test-offset-1-3",
+        "uniqueId": "test-ctgA-1-3",
       },
       Object {
         "end": 5500,
         "gene_id": "EDEN",
         "gene_name": "EDEN",
         "name": "EDEN.2",
-        "parentId": "test-offset-1",
+        "parentId": "test-ctgA-1",
         "phase": 0,
         "refName": "ctgA",
         "source": "example",
@@ -252,14 +252,14 @@ Array [
         "strand": 1,
         "transcript_id": "EDEN.2",
         "type": "exon",
-        "uniqueId": "test-offset-1-4",
+        "uniqueId": "test-ctgA-1-4",
       },
       Object {
         "end": 7608,
         "gene_id": "EDEN",
         "gene_name": "EDEN",
         "name": "EDEN.2",
-        "parentId": "test-offset-1",
+        "parentId": "test-ctgA-1",
         "phase": 0,
         "refName": "ctgA",
         "source": "example",
@@ -267,14 +267,14 @@ Array [
         "strand": 1,
         "transcript_id": "EDEN.2",
         "type": "CDS",
-        "uniqueId": "test-offset-1-5",
+        "uniqueId": "test-ctgA-1-5",
       },
       Object {
         "end": 9000,
         "gene_id": "EDEN",
         "gene_name": "EDEN",
         "name": "EDEN.2",
-        "parentId": "test-offset-1",
+        "parentId": "test-ctgA-1",
         "phase": 0,
         "refName": "ctgA",
         "source": "example",
@@ -282,14 +282,14 @@ Array [
         "strand": 1,
         "transcript_id": "EDEN.2",
         "type": "exon",
-        "uniqueId": "test-offset-1-6",
+        "uniqueId": "test-ctgA-1-6",
       },
       Object {
         "end": 9000,
         "gene_id": "EDEN",
         "gene_name": "EDEN",
         "name": "EDEN.2",
-        "parentId": "test-offset-1",
+        "parentId": "test-ctgA-1",
         "phase": 0,
         "refName": "ctgA",
         "source": "example",
@@ -297,12 +297,12 @@ Array [
         "strand": 1,
         "transcript_id": "EDEN.2",
         "type": "three_prime_UTR",
-        "uniqueId": "test-offset-1-7",
+        "uniqueId": "test-ctgA-1-7",
       },
     ],
     "transcript_id": "EDEN.2",
     "type": "transcript",
-    "uniqueId": "test-offset-1",
+    "uniqueId": "test-ctgA-1",
   },
   Object {
     "end": 9000,
@@ -320,7 +320,7 @@ Array [
         "gene_id": "EDEN",
         "gene_name": "EDEN",
         "name": "EDEN.3",
-        "parentId": "test-offset-2",
+        "parentId": "test-ctgA-2",
         "phase": 0,
         "refName": "ctgA",
         "source": "example",
@@ -328,14 +328,14 @@ Array [
         "strand": 1,
         "transcript_id": "EDEN.3",
         "type": "exon",
-        "uniqueId": "test-offset-2-0",
+        "uniqueId": "test-ctgA-2-0",
       },
       Object {
         "end": 1500,
         "gene_id": "EDEN",
         "gene_name": "EDEN",
         "name": "EDEN.3",
-        "parentId": "test-offset-2",
+        "parentId": "test-ctgA-2",
         "phase": 1,
         "refName": "ctgA",
         "source": "example",
@@ -343,14 +343,14 @@ Array [
         "strand": 1,
         "transcript_id": "EDEN.3",
         "type": "five_prime_UTR",
-        "uniqueId": "test-offset-2-1",
+        "uniqueId": "test-ctgA-2-1",
       },
       Object {
         "end": 3902,
         "gene_id": "EDEN",
         "gene_name": "EDEN",
         "name": "EDEN.3",
-        "parentId": "test-offset-2",
+        "parentId": "test-ctgA-2",
         "phase": 0,
         "refName": "ctgA",
         "source": "example",
@@ -358,14 +358,14 @@ Array [
         "strand": 1,
         "transcript_id": "EDEN.3",
         "type": "exon",
-        "uniqueId": "test-offset-2-2",
+        "uniqueId": "test-ctgA-2-2",
       },
       Object {
         "end": 3300,
         "gene_id": "EDEN",
         "gene_name": "EDEN",
         "name": "EDEN.3",
-        "parentId": "test-offset-2",
+        "parentId": "test-ctgA-2",
         "phase": 1,
         "refName": "ctgA",
         "source": "example",
@@ -373,14 +373,14 @@ Array [
         "strand": 1,
         "transcript_id": "EDEN.3",
         "type": "five_prime_UTR",
-        "uniqueId": "test-offset-2-3",
+        "uniqueId": "test-ctgA-2-3",
       },
       Object {
         "end": 3902,
         "gene_id": "EDEN",
         "gene_name": "EDEN",
         "name": "EDEN.3",
-        "parentId": "test-offset-2",
+        "parentId": "test-ctgA-2",
         "phase": 0,
         "refName": "ctgA",
         "source": "example",
@@ -388,14 +388,14 @@ Array [
         "strand": 1,
         "transcript_id": "EDEN.3",
         "type": "CDS",
-        "uniqueId": "test-offset-2-4",
+        "uniqueId": "test-ctgA-2-4",
       },
       Object {
         "end": 5500,
         "gene_id": "EDEN",
         "gene_name": "EDEN",
         "name": "EDEN.3",
-        "parentId": "test-offset-2",
+        "parentId": "test-ctgA-2",
         "phase": 1,
         "refName": "ctgA",
         "source": "example",
@@ -403,14 +403,14 @@ Array [
         "strand": 1,
         "transcript_id": "EDEN.3",
         "type": "CDS",
-        "uniqueId": "test-offset-2-5",
+        "uniqueId": "test-ctgA-2-5",
       },
       Object {
         "end": 5500,
         "gene_id": "EDEN",
         "gene_name": "EDEN",
         "name": "EDEN.3",
-        "parentId": "test-offset-2",
+        "parentId": "test-ctgA-2",
         "phase": 0,
         "refName": "ctgA",
         "source": "example",
@@ -418,14 +418,14 @@ Array [
         "strand": 1,
         "transcript_id": "EDEN.3",
         "type": "exon",
-        "uniqueId": "test-offset-2-6",
+        "uniqueId": "test-ctgA-2-6",
       },
       Object {
         "end": 7600,
         "gene_id": "EDEN",
         "gene_name": "EDEN",
         "name": "EDEN.3",
-        "parentId": "test-offset-2",
+        "parentId": "test-ctgA-2",
         "phase": 1,
         "refName": "ctgA",
         "source": "example",
@@ -433,14 +433,14 @@ Array [
         "strand": 1,
         "transcript_id": "EDEN.3",
         "type": "CDS",
-        "uniqueId": "test-offset-2-7",
+        "uniqueId": "test-ctgA-2-7",
       },
       Object {
         "end": 9000,
         "gene_id": "EDEN",
         "gene_name": "EDEN",
         "name": "EDEN.3",
-        "parentId": "test-offset-2",
+        "parentId": "test-ctgA-2",
         "phase": 0,
         "refName": "ctgA",
         "source": "example",
@@ -448,14 +448,14 @@ Array [
         "strand": 1,
         "transcript_id": "EDEN.3",
         "type": "exon",
-        "uniqueId": "test-offset-2-8",
+        "uniqueId": "test-ctgA-2-8",
       },
       Object {
         "end": 9000,
         "gene_id": "EDEN",
         "gene_name": "EDEN",
         "name": "EDEN.3",
-        "parentId": "test-offset-2",
+        "parentId": "test-ctgA-2",
         "phase": 1,
         "refName": "ctgA",
         "source": "example",
@@ -463,12 +463,12 @@ Array [
         "strand": 1,
         "transcript_id": "EDEN.3",
         "type": "three_prime_UTR",
-        "uniqueId": "test-offset-2-9",
+        "uniqueId": "test-ctgA-2-9",
       },
     ],
     "transcript_id": "EDEN.3",
     "type": "transcript",
-    "uniqueId": "test-offset-2",
+    "uniqueId": "test-ctgA-2",
   },
   Object {
     "end": 11500,
@@ -482,7 +482,7 @@ Array [
       Object {
         "end": 11500,
         "name": "Apple1",
-        "parentId": "test-offset-3",
+        "parentId": "test-ctgA-3",
         "phase": 0,
         "refName": "ctgA",
         "source": "bare_predicted",
@@ -490,12 +490,12 @@ Array [
         "strand": 1,
         "transcript_id": "Apple1",
         "type": "CDS",
-        "uniqueId": "test-offset-3-0",
+        "uniqueId": "test-ctgA-3-0",
       },
     ],
     "transcript_id": "Apple1",
     "type": "transcript",
-    "uniqueId": "test-offset-3",
+    "uniqueId": "test-ctgA-3",
   },
   Object {
     "end": 17000,
@@ -509,7 +509,7 @@ Array [
       Object {
         "end": 13800,
         "name": "cds-Apple2",
-        "parentId": "test-offset-4",
+        "parentId": "test-ctgA-4",
         "phase": 0,
         "refName": "ctgA",
         "source": "predicted",
@@ -517,12 +517,12 @@ Array [
         "strand": 1,
         "transcript_id": "cds-Apple2",
         "type": "CDS",
-        "uniqueId": "test-offset-4-0",
+        "uniqueId": "test-ctgA-4-0",
       },
       Object {
         "end": 15500,
         "name": "cds-Apple2",
-        "parentId": "test-offset-4",
+        "parentId": "test-ctgA-4",
         "phase": 1,
         "refName": "ctgA",
         "source": "predicted",
@@ -530,12 +530,12 @@ Array [
         "strand": 1,
         "transcript_id": "cds-Apple2",
         "type": "CDS",
-        "uniqueId": "test-offset-4-1",
+        "uniqueId": "test-ctgA-4-1",
       },
       Object {
         "end": 17000,
         "name": "cds-Apple2",
-        "parentId": "test-offset-4",
+        "parentId": "test-ctgA-4",
         "phase": 2,
         "refName": "ctgA",
         "source": "predicted",
@@ -543,12 +543,12 @@ Array [
         "strand": 1,
         "transcript_id": "cds-Apple2",
         "type": "CDS",
-        "uniqueId": "test-offset-4-2",
+        "uniqueId": "test-ctgA-4-2",
       },
     ],
     "transcript_id": "cds-Apple2",
     "type": "transcript",
-    "uniqueId": "test-offset-4",
+    "uniqueId": "test-ctgA-4",
   },
   Object {
     "end": 23000,
@@ -562,7 +562,7 @@ Array [
       Object {
         "end": 17999,
         "name": "rna-Apple3",
-        "parentId": "test-offset-5",
+        "parentId": "test-ctgA-5",
         "phase": 0,
         "refName": "ctgA",
         "source": "exonerate",
@@ -570,12 +570,12 @@ Array [
         "strand": 1,
         "transcript_id": "rna-Apple3",
         "type": "UTR",
-        "uniqueId": "test-offset-5-0",
+        "uniqueId": "test-ctgA-5-0",
       },
       Object {
         "end": 18800,
         "name": "rna-Apple3",
-        "parentId": "test-offset-5",
+        "parentId": "test-ctgA-5",
         "phase": 0,
         "refName": "ctgA",
         "source": "exonerate",
@@ -583,12 +583,12 @@ Array [
         "strand": 1,
         "transcript_id": "rna-Apple3",
         "type": "exon",
-        "uniqueId": "test-offset-5-1",
+        "uniqueId": "test-ctgA-5-1",
       },
       Object {
         "end": 18800,
         "name": "rna-Apple3",
-        "parentId": "test-offset-5",
+        "parentId": "test-ctgA-5",
         "phase": 0,
         "refName": "ctgA",
         "source": "exonerate",
@@ -596,12 +596,12 @@ Array [
         "strand": 1,
         "transcript_id": "rna-Apple3",
         "type": "CDS",
-        "uniqueId": "test-offset-5-2",
+        "uniqueId": "test-ctgA-5-2",
       },
       Object {
         "end": 19500,
         "name": "rna-Apple3",
-        "parentId": "test-offset-5",
+        "parentId": "test-ctgA-5",
         "phase": 0,
         "refName": "ctgA",
         "source": "exonerate",
@@ -609,12 +609,12 @@ Array [
         "strand": 1,
         "transcript_id": "rna-Apple3",
         "type": "CDS",
-        "uniqueId": "test-offset-5-3",
+        "uniqueId": "test-ctgA-5-3",
       },
       Object {
         "end": 19500,
         "name": "rna-Apple3",
-        "parentId": "test-offset-5",
+        "parentId": "test-ctgA-5",
         "phase": 0,
         "refName": "ctgA",
         "source": "exonerate",
@@ -622,12 +622,12 @@ Array [
         "strand": 1,
         "transcript_id": "rna-Apple3",
         "type": "exon",
-        "uniqueId": "test-offset-5-4",
+        "uniqueId": "test-ctgA-5-4",
       },
       Object {
         "end": 21200,
         "name": "rna-Apple3",
-        "parentId": "test-offset-5",
+        "parentId": "test-ctgA-5",
         "phase": 0,
         "refName": "ctgA",
         "source": "exonerate",
@@ -635,12 +635,12 @@ Array [
         "strand": 1,
         "transcript_id": "rna-Apple3",
         "type": "CDS",
-        "uniqueId": "test-offset-5-5",
+        "uniqueId": "test-ctgA-5-5",
       },
       Object {
         "end": 23000,
         "name": "rna-Apple3",
-        "parentId": "test-offset-5",
+        "parentId": "test-ctgA-5",
         "phase": 0,
         "refName": "ctgA",
         "source": "exonerate",
@@ -648,12 +648,12 @@ Array [
         "strand": 1,
         "transcript_id": "rna-Apple3",
         "type": "exon",
-        "uniqueId": "test-offset-5-6",
+        "uniqueId": "test-ctgA-5-6",
       },
       Object {
         "end": 23000,
         "name": "rna-Apple3",
-        "parentId": "test-offset-5",
+        "parentId": "test-ctgA-5",
         "phase": 0,
         "refName": "ctgA",
         "source": "exonerate",
@@ -661,12 +661,12 @@ Array [
         "strand": 1,
         "transcript_id": "rna-Apple3",
         "type": "UTR",
-        "uniqueId": "test-offset-5-7",
+        "uniqueId": "test-ctgA-5-7",
       },
     ],
     "transcript_id": "rna-Apple3",
     "type": "transcript",
-    "uniqueId": "test-offset-5",
+    "uniqueId": "test-ctgA-5",
   },
 ]
 `;
@@ -696,7 +696,7 @@ Array [
         "gene_source": "ensembl",
         "gene_version": "1",
         "name": "ENSVPAT00000000407",
-        "parentId": "test-offset-0",
+        "parentId": "test-GeneScaffold_1-0",
         "phase": 0,
         "refName": "GeneScaffold_1",
         "source": "ensembl",
@@ -707,7 +707,7 @@ Array [
         "transcript_source": "ensembl",
         "transcript_version": "1",
         "type": "exon",
-        "uniqueId": "test-offset-0-0",
+        "uniqueId": "test-GeneScaffold_1-0-0",
       },
       Object {
         "end": 107812,
@@ -719,7 +719,7 @@ Array [
         "gene_source": "ensembl",
         "gene_version": "1",
         "name": "ENSVPAT00000000407",
-        "parentId": "test-offset-0",
+        "parentId": "test-GeneScaffold_1-0",
         "phase": 0,
         "refName": "GeneScaffold_1",
         "source": "ensembl",
@@ -730,7 +730,7 @@ Array [
         "transcript_source": "ensembl",
         "transcript_version": "1",
         "type": "exon",
-        "uniqueId": "test-offset-0-1",
+        "uniqueId": "test-GeneScaffold_1-0-1",
       },
       Object {
         "end": 107877,
@@ -742,7 +742,7 @@ Array [
         "gene_source": "ensembl",
         "gene_version": "1",
         "name": "ENSVPAT00000000407",
-        "parentId": "test-offset-0",
+        "parentId": "test-GeneScaffold_1-0",
         "phase": 0,
         "refName": "GeneScaffold_1",
         "source": "ensembl",
@@ -753,7 +753,7 @@ Array [
         "transcript_source": "ensembl",
         "transcript_version": "1",
         "type": "exon",
-        "uniqueId": "test-offset-0-2",
+        "uniqueId": "test-GeneScaffold_1-0-2",
       },
       Object {
         "end": 107895,
@@ -765,7 +765,7 @@ Array [
         "gene_source": "ensembl",
         "gene_version": "1",
         "name": "ENSVPAT00000000407",
-        "parentId": "test-offset-0",
+        "parentId": "test-GeneScaffold_1-0",
         "phase": 0,
         "refName": "GeneScaffold_1",
         "source": "ensembl",
@@ -776,7 +776,7 @@ Array [
         "transcript_source": "ensembl",
         "transcript_version": "1",
         "type": "exon",
-        "uniqueId": "test-offset-0-3",
+        "uniqueId": "test-GeneScaffold_1-0-3",
       },
       Object {
         "end": 107917,
@@ -788,7 +788,7 @@ Array [
         "gene_source": "ensembl",
         "gene_version": "1",
         "name": "ENSVPAT00000000407",
-        "parentId": "test-offset-0",
+        "parentId": "test-GeneScaffold_1-0",
         "phase": 0,
         "refName": "GeneScaffold_1",
         "source": "ensembl",
@@ -799,7 +799,7 @@ Array [
         "transcript_source": "ensembl",
         "transcript_version": "1",
         "type": "exon",
-        "uniqueId": "test-offset-0-4",
+        "uniqueId": "test-GeneScaffold_1-0-4",
       },
       Object {
         "end": 107987,
@@ -811,7 +811,7 @@ Array [
         "gene_source": "ensembl",
         "gene_version": "1",
         "name": "ENSVPAT00000000407",
-        "parentId": "test-offset-0",
+        "parentId": "test-GeneScaffold_1-0",
         "phase": 0,
         "refName": "GeneScaffold_1",
         "source": "ensembl",
@@ -822,7 +822,7 @@ Array [
         "transcript_source": "ensembl",
         "transcript_version": "1",
         "type": "exon",
-        "uniqueId": "test-offset-0-5",
+        "uniqueId": "test-GeneScaffold_1-0-5",
       },
     ],
     "transcript_biotype": "pseudogene",
@@ -830,7 +830,7 @@ Array [
     "transcript_source": "ensembl",
     "transcript_version": "1",
     "type": "transcript",
-    "uniqueId": "test-offset-0",
+    "uniqueId": "test-GeneScaffold_1-0",
   },
 ]
 `;
diff --git a/products/jbrowse-web/src/__snapshots__/jbrowseModel.test.ts.snap b/products/jbrowse-web/src/__snapshots__/jbrowseModel.test.ts.snap
index 1586ca2922..e0f3a2a6f4 100644
--- a/products/jbrowse-web/src/__snapshots__/jbrowseModel.test.ts.snap
+++ b/products/jbrowse-web/src/__snapshots__/jbrowseModel.test.ts.snap
@@ -1966,6 +1966,36 @@ Object {
       "trackId": "bedtabix_genes",
       "type": "FeatureTrack",
     },
+    Object {
+      "adapter": Object {
+        "bedLocation": Object {
+          "internetAccountId": undefined,
+          "internetAccountPreAuthorization": undefined,
+          "locationType": "UriLocation",
+          "uri": "volvox-bed12.bed",
+        },
+        "type": "BedAdapter",
+      },
+      "assemblyNames": Array [
+        "volvox",
+      ],
+      "category": Array [
+        "Miscellaneous",
+      ],
+      "displays": Array [
+        Object {
+          "displayId": "bed_genes-LinearBasicDisplay",
+          "type": "LinearBasicDisplay",
+        },
+        Object {
+          "displayId": "bed_genes-LinearArcDisplay",
+          "type": "LinearArcDisplay",
+        },
+      ],
+      "name": "Bed genes",
+      "trackId": "bed_genes",
+      "type": "FeatureTrack",
+    },
     Object {
       "adapter": Object {
         "bigWigLocation": Object {
diff --git a/test_data/volvox/config.json b/test_data/volvox/config.json
index 101f2ffed1..28d5f98726 100644
--- a/test_data/volvox/config.json
+++ b/test_data/volvox/config.json
@@ -1030,6 +1030,19 @@
         }
       }
     },
+    {
+      "type": "FeatureTrack",
+      "trackId": "bed_genes",
+      "name": "Bed genes",
+      "assemblyNames": ["volvox"],
+      "category": ["Miscellaneous"],
+      "adapter": {
+        "type": "BedAdapter",
+        "bedLocation": {
+          "uri": "volvox-bed12.bed"
+        }
+      }
+    },
     {
       "type": "QuantitativeTrack",
       "trackId": "LrM3WWJR0tj",
diff --git a/test_data/volvox/volvox-bed12.bed b/test_data/volvox/volvox-bed12.bed
new file mode 100644
index 0000000000..1b08fb2b49
--- /dev/null
+++ b/test_data/volvox/volvox-bed12.bed
@@ -0,0 +1,4 @@
+ctgA	1049	9000	EDEN.1	1000	+	1200	7608	0,0,0	4	451,903,501,2001	0,1950,3950,5950	EDEN	EDEN	-	-	-
+ctgA	1049	9000	EDEN.2	1000	+	1200	7608	0,0,0	3	451,501,2001	0,3950,5950	EDEN	EDEN	-	-	-
+ctgA	1299	9000	EDEN.3	1000	+	3300	7600	0,0,0	4	201,903,501,2001	0,1700,3700,5700	EDEN	EDEN	-	-	-
+ctgA	17399	23000	rna-Apple3	1000	+	17999	21200	0,0,0	3	1401,501,2001	0,1600,3600	rna-Apple3	rna-Apple3	-	-	-