PureJsImage v0.9.0

Added

• Expanded TIFF decoding with unsigned 6-, 10-, 12-, and 14-bit grayscale, 2-, 4-, 10-, 12-,
  and 14-bit chunky or planar RGB, native packed horizontal prediction, direct 16-bit output,
  and five-sample CMYK plus associated or unassociated alpha while retaining bounded segment
  memory.
• Added explicit WebP-in-TIFF composition through
  createTiffCodec({ embeddedCodecs: [webpCodec] }); the default TIFF codec and root package do
  not import or activate WebP automatically.
• Added a complete development-only TIFF dependency matrix plus isolated raw full-image and region
  benchmark operations with source-read, maximum decoded-block, external-memory, and ArrayBuffer
  measurements.
• Added a generated evidence-backed TIFF library comparison across the README and documentation,
  backed by pinned versions and a 154-file isolated-process conformance run that reports exact
  pixels, mismatches, unsupported cases, errors, timeouts, crashes, native scientific rasters, and
  malformed-input behavior separately.
• Expanded the browser demo from 8 to 38 public examples spanning ECCI scanning electron
  microscopy, OME-TIFF microscopy dimensions, FLIM, SPIM, high-content screening, pathology,
  scientific JPEG 2000, high-bit-depth AVIF, and additional unusual codec layouts.
• Added a published llms.txt with a capability-manifest-generated codec map, complete quick API
  reference, runtime and safety boundaries, and migration guidance for Jimp, Sharp, image-js,
  jSquash, GeoTIFF.js, and UTIF.js; every website footer now links the guide and sitemap.
• Added TIFF signed 8-/16-bit and IEEE float16/float32/float64 grayscale and RGB decoding with
  native-precision raw pixel blocks, deterministic display ranges, bounded Predictor 2 and
  floating Predictor 3 reversal, and browser-compatible display conversion.
• Added unsigned 24-/32-/64-bit TIFF grayscale and RGB decoding with canonical gray32,
  rgb32, gray64, and rgb64 raw blocks, exact values above JavaScript's safe-integer range,
  bounded wide Predictor 2 reversal, and deterministic display conversion without an 8-/16-bit
  raw intermediate or per-pixel BigInt arithmetic.
• Added bounded TIFF SGILog and SGILog24 decompression with native CIE Y/XYZ float32 pixel
  blocks, logarithmic luminance and chroma reconstruction, deterministic CCIR 709 gamma-2
  display conversion, exact segment validation, and browser-compatible strip and tile decoding.
• Added explicit TIFF top-level frame and reduced-resolution SubIFD selection for Classic TIFF
  and BigTIFF, with selected-level metadata, bounded IFD graph traversal, cycle rejection,
  alias-safe shared-directory reuse, global directory limits, and no reads from unselected pixel
  segments.
• Added 16-bit TIFF palette decode with exact full-range ColorMap scaling, plus signed 8-/16-bit
  and float16/float32/float64 CMYK display conversion using declared sample ranges or deterministic
  full-type defaults, bounded segment output, and independent pixel validation.
• Added 8-bit TIFF CIELab conversion from D65-referenced Lab* to sRGB, bounded CMYK
  lut16 A2B0 ICC-profile conversion with profile precedence over numeric display, and
  FillOrder=2 normalization for non-fax strips and tiles before predictor reversal without
  mutating aliased source buffers.
• Added a public TIFF document layer at purejsimage/tiff with stable top-level/SubIFD graphs,
  absolute IFD offsets and lookup, bounded defensive-copy private metadata reads, cached immutable
  typed tags with per-call limits, per-directory display and native raster decoders, deterministic
  third-party profile registration with isolated detector failures and ambiguity rejection, and
  typed explicit TiffProfile<T> opening.
• Added native-precision planar or interleaved N-channel RasterBlock output plus explicit
  rasterToPixels() range mapping, so scientific samples no longer require an implicit RGB
  interpretation.
• Added purejsimage/scientific OME-TIFF datasets with validated Z/C/T dimensions, channel and
  physical-pixel metadata, explicit or implicit TiffData plane mappings, separate-channel
  assembly, and reduced-resolution SubIFD selection.
• Added a generic WholeSlideImage contract and first-party Aperio SVS profile with bounded
  pyramid/associated-image region reads, MPP and objective metadata, reusable JPEG 2000 codestream
  composition, and TIFF compression tags 33003/33005. The pinned irreversible Aperio tile is
  independently validated against OpenSlide within two 8-bit code values.
• Added a separately compiled Leica SCN single-area profile example that imports only published
  package entries, with an automated boundary check suitable for independent vendor packages.
• Added a dedicated TIFF documentation page covering the complete decode matrix, scientific and
  whole-slide APIs, third-party profiles, canonical output, memory model, and unsupported
  boundaries; reduced the README TIFF and Zstandard sections to direct documentation links and
  refreshed the measured bundle and installed-size tables.
• Added a reusable first-party Zstandard decompressor at purejsimage/compression/zstd with
  explicit output and window bounds, raw/RLE/compressed blocks, Huffman and FSE entropy decoding,
  repeated tables and offsets, frame checksums, and structured malformed-input failures.
• Added bounded TIFF Compression=50000 strip and tile decoding through the reusable Zstandard
  backend, preserving existing predictor, sample, and pixel processing.
• Replaced simple uncompressed TIFF output with a canonical Classic little-endian 8-bit RGB/RGBA
  encoder using independently Deflate-compressed, horizontally predicted strips, automatic
  roughly 128 KiB strip planning, strict extensible strategy options, bounded raw strip scratch,
  compatible RGB ICC preservation, and exact ImageMagick/LibTIFF interoperability validation.
• Added bounded first-party TIFF LERC2 and LERC-plus-Deflate segment decoding with mask handling,
  native numeric sample reconstruction, independently validated byte/float pixels, and structured
  rejection of corrupt headers, dimensions, masks, checksums, and codec metadata.
• Added first-party GeoTIFF model, coordinate, bounding-box, GeoKey, GDAL metadata, and nodata
  helpers over the public TIFF document API, with exact affine and tiepoint semantics.
• Added a bounded HttpRangeSource with request coalescing, validator-protected reads, byte-capped
  LRU caching, response cancellation, and selective COG-style region access that does not fetch
  unrelated tiles.
• Expanded structured TIFF output with explicit rows per strip, tiled RGB/RGBA segments, automatic
  or explicit BigTIFF selection, multi-page top-level IFD chains, and reduced-resolution SubIFD
  pyramids, independently reopened through GeoTIFF.js.
• Added a development-only TIFF conformance harness that scores PureJsImage, GeoTIFF.js, UTIF.js,
  image-js, and Jimp against independent sharp/ImageMagick RGBA output with isolated memory,
  timeout, crash, exact-pixel, and error reporting.

Changed

• Moved OME-TIFF and raster helpers, Aperio SVS, and GeoTIFF profiles out of the root and browser
  entries into purejsimage/scientific, purejsimage/pathology, and purejsimage/tiff; moved
  HttpRangeSource into purejsimage/sources/http-range so the core bundle does not retain
  specialized TIFF workflows or the optional HTTP adapter.
• Relabeled TIFF conformance as an unreleased commit-pinned workspace snapshot and made decoded
  coverage the compact comparison headline, with exact pixels and failure counts reported
  separately.