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iD uses a simple presets system based on JSON preset definitions and simple structure.

Individual Presets

Specific presets are located under data/presets/presets. They're organized in a directory hierarchy based on OSM key/value pairs. For example, the preset that matches the tag leisure=park is in the file data/presets/presets/leisure/park.json.

Preset Format

A basic preset is of the form:

    // The icon in iD which represents this feature.
    "icon": "park",
    // An array of field names. See the fields documentation for details of what's valid here.
    "fields": [
    // The geometry types for which this preset is valid.
    // options are point, area, line, and vertex.
    // vertexes are points that are parts of lines, like the nodes
    // in a road
    // lines are unclosed ways, and areas are closed ways
    "geometry": [
        "point", "area"
    // Terms are synonyms for the preset - these are added to fuel
    // the search functionality. searching for 'woodland' will bring
    // up this 'park' preset
    "terms": [
        "village green",
    // Tags that are added to the feature when selecting the preset,
    // and also used to match the preset against existing features.
    // You can use the value "*" to match any value.
    "tags": {
        "leisure": "park"
    // English language display name for this map feature.
    "name": "Park"


Fields are, like presets, defined in JSON structures. A typical field is

    "key": "access",
    "type": "combo"

In which type is the fields's type. Valid field types are

  • textarea
  • radio
  • combo
  • address
  • check - a tri-state checkbox: yes, no, or unknown (no tag)
  • defaultcheck - a boolean checkbox where checked produces a *=yes tag and unchecked produces no tag

The key property names the OSM key that the field will edit. Alternatively, for compound fields like address, you can specify an array of keys in the keys property.

Each field definition lives in a separate file in data/presets/fields. The field name (used in the preset fields property) is the name of the file (minus the .json extension).


Preset icons in iD are pulled from the open source POI icon set, Maki. Icons are stored in dist/img/maki-sprite.png. The icons are identified in iD by the same name as they are on the Maki home. Use those names when identifying the icon to be used for a given preset.


To build presets, all you need to do is run make.

This command will take care of running the build script, which packages all presets together with imagery data, and deprecated or discarded tags into one file, data/data.js, which is included in the packaged iD.js file.

Custom Presets

iD supports deployments which use a custom set of presets. You can supply presets via the presets accessor:

var id = iD().presets({
    presets: { ... },
    fields: { ... },
    defaults: { ... },
    categories: { ... }

All four parts (presets, fields, defaults, and categories) must be supplied. In addition, several base presets and fields must be included.

Basic geometric presets must be included so that every feature matches at least one preset. For example:

"area": {
    "name": "Area",
    "tags": {},
    "geometry": ["area"],
    "matchScore": 0.1
"line": {
    "name": "Line",
    "tags": {},
    "geometry": ["line"],
    "matchScore": 0.1
"point": {
    "name": "Point",
    "tags": {},
    "geometry": ["point"],
    "matchScore": 0.1
"vertex": {
    "name": "Other",
    "tags": {},
    "geometry": ["vertex"],
    "matchScore": 0.1

A "name" field must be included:

"name": {
    "key": "name",
    "type": "localized",
    "label": "Name",
    "placeholder": "Common name (if any)"
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