Web Fonts Working Group - Activity

TR publications

• 1 document published.

  • 13 October 2026

    Incremental Font Transfer published as a Candidate Recommendation Draft. History of Incremental Font Transfer

Past meetings

• 4 meetings.

  • 22 October 2026

    WebFonts WG Zoom call, 22 October 2026.

  • 15 October 2026

    WebFonts WG Zoom call, 15 October 2026.

  • 8 October 2026

    WebFonts WG Zoom call, 8 October 2026.

  • 1 October 2026

    WebFonts WG Zoom call, 1 October 2026.

Participants

• 1 participant left.

  • 23 October 2026

    Abhishek Singh (Microsoft Corporation) left.

GitHub

w3c/IFT

• 1 issue opened.

  • 22 October 2026

    Clarify the scope of "must not attempt to further extend the font subset" in Handle errors w3c/IFT#316, by @terkel.

• 3 pull requests opened.

  • 19 October 2026

    Add recommendation to use IFT specific font flavors in WOFF2. w3c/IFT#315, by @garretrieger.

  • 19 October 2026

    Fix duplicated "conform-" prefix in glyph keyed format id w3c/IFT#314, by @terkel.

  • 8 October 2026

    Update changes since the 18 Nov 2025 CRD w3c/IFT#313, by @svgeesus.

• 3 pull requests merged.

  • 21 October 2026

    Fix duplicated "conform-" prefix in glyph keyed format id w3c/IFT#314.

  • 20 October 2026

    Add recommendation to use IFT specific font flavors in WOFF2. w3c/IFT#315.

  • 12 October 2026

    Update changes since the 18 Nov 2025 CRD w3c/IFT#313.

• 1 pull request received 1 new comment.

  • 8 October 2026

    Update changes since the 18 Nov 2025 CRD w3c/IFT#313 (1 comment by @svgeesus)

w3c/ift-client-tests

• 4 issues closed.

  • 21 October 2026

    Implement Test for Conformance Requirement: conform-updating-glyf-updates-loca w3c/ift-client-tests#26.

  • 14 October 2026

    Implement Test for Conformance Requirement: interpreting-patch-map-format-1 w3c/ift-client-tests#30.

  • 14 October 2026

    Implement Test for Conformance Requirement: remove-entries-format-1 w3c/ift-client-tests#32.

  • 14 October 2026

    Implement Test for Conformance Requirement: conform-format1-entry-index-maximum w3c/ift-client-tests#14.

• 2 issues received 2 new comments.

  • 15 October 2026

    Implement Test for Conformance Requirement: conform-palette-not-accesible-from-different-documents w3c/ift-client-tests#20 (1 comment by @streude)

  • 13 October 2026

    Implement Test for Conformance Requirement: conform-format1-entry-index-maximum w3c/ift-client-tests#14 (1 comment by @terkel)
• 6 pull requests opened.

  • 19 October 2026

    Update bundled rust client to current fontations main w3c/ift-client-tests#62, by @terkel.

  • 19 October 2026

    Add test for conform-required-selection-criteria w3c/ift-client-tests#61, by @terkel.

  • 19 October 2026

    Add test for conform-updating-glyf-updates-loca w3c/ift-client-tests#60, by @terkel.

  • 19 October 2026

    Rename sparse bit set test so coverage tracks the decoding algorithm w3c/ift-client-tests#59, by @terkel.

  • 15 October 2026

    Point conform-patchmap-valid-format-number test at defaultPatchFormat w3c/ift-client-tests#58, by @terkel.

  • 13 October 2026

    Sync test suite with removal of Patch Map Format 1 from the spec w3c/ift-client-tests#57, by @terkel.

• 5 pull requests merged.

  • 21 October 2026

    Add test for conform-updating-glyf-updates-loca w3c/ift-client-tests#60.

  • 21 October 2026

    Update bundled rust client to current fontations main w3c/ift-client-tests#62.

  • 21 October 2026

    Rename sparse bit set test so coverage tracks the decoding algorithm w3c/ift-client-tests#59.

  • 16 October 2026

    Point conform-patchmap-valid-format-number test at defaultPatchFormat w3c/ift-client-tests#58.

  • 14 October 2026

    Sync test suite with removal of Patch Map Format 1 from the spec w3c/ift-client-tests#57.

• 1 pull request received 2 new comments.

  • Latest comment 22 October 2026

    Add test for conform-required-selection-criteria w3c/ift-client-tests#61 (2 comments by @garretrieger, @terkel)

w3c/ift-encoder

• 1 issue closed.

  • 5 October 2026

    Better support for overlapping scripts (eg. CJK) in the segmenter w3c/ift-encoder#261.

• 7 pull requests opened.

  • 19 October 2026

    Use const& intsead of copy in for loops. w3c/ift-encoder#278, by @garretrieger.

  • 16 October 2026

    [Experimental] Add unicode range target mode to the IFT encoder w3c/ift-encoder#277, by @garretrieger.

  • 15 October 2026

    Update AutoPickQuality() threshold buckets. w3c/ift-encoder#276, by @garretrieger.

  • 9 October 2026

    Don't reset the strategy prob cache after moving it. w3c/ift-encoder#275, by @garretrieger.

  • 9 October 2026

    Fix unsigned underflow in BrotliBinaryDiff::Diff() reserve size. w3c/ift-encoder#274, by @sharapeco.

  • 8 October 2026

    Move shared segments into the merge group in which it has the highest probability. w3c/ift-encoder#273, by @garretrieger.

  • 8 October 2026

    Improvements to Heuristic Merger w3c/ift-encoder#272, by @garretrieger.

• 7 pull requests merged.

  • 19 October 2026

    [Experimental] Add unicode range target mode to the IFT encoder w3c/ift-encoder#277.

  • 19 October 2026

    Use const& intsead of copy in for loops. w3c/ift-encoder#278.

  • 15 October 2026

    Update AutoPickQuality() threshold buckets. w3c/ift-encoder#276.

  • 9 October 2026

    Fix unsigned underflow in BrotliBinaryDiff::Diff() reserve size. w3c/ift-encoder#274.

  • 9 October 2026

    Don't reset the strategy prob cache after moving it. w3c/ift-encoder#275.

  • 8 October 2026

    Improvements to Heuristic Merger w3c/ift-encoder#272.

  • 5 October 2026

    Add support for merging overlapping scripts w3c/ift-encoder#268.

• 1 pull request closed.

  • 9 October 2026

    Move shared segments into the merge group in which it has the highest probability. w3c/ift-encoder#273.

• 2 pull requests received 3 new comments.

  • Latest comment 9 October 2026

    Move shared segments into the merge group in which it has the highest probability. w3c/ift-encoder#273 (2 comments by @garretrieger)

  • 1 October 2026

    Add support for merging overlapping scripts w3c/ift-encoder#268 (1 comment by @garretrieger)

Past meetings

• 4 meetings.

  • 24 September 2026

    WebFonts WG Zoom call, 24 September 2026.

  • 17 September 2026

    WebFonts WG Zoom call, 17 September 2026.

  • 10 September 2026

    WebFonts WG Zoom call, 10 September 2026.

  • 3 September 2026

    WebFonts WG Zoom call, 3 September 2026.

GitHub

w3c/ift-encoder

• 2 issues opened.

  • 17 September 2026

    Better support for layout features in the segmenter. w3c/ift-encoder#271, by @garretrieger.

  • 16 September 2026

    Consider adding a config setting that exempts high frequency codepoints from minimum group sizes w3c/ift-encoder#269, by @garretrieger.

• 5 pull requests opened.

  • 16 September 2026

    Cache IntSet's hash value. w3c/ift-encoder#270, by @garretrieger.

  • 15 September 2026

    Add support for merging overlapping scripts w3c/ift-encoder#268, by @garretrieger.

  • 14 September 2026

    Update to latest ift-encoder-data. w3c/ift-encoder#267, by @garretrieger.

  • 14 September 2026

    Fix non-determinism in segmenter w3c/ift-encoder#266, by @garretrieger.

  • 10 September 2026

    Remove probabilities stored on Segment w3c/ift-encoder#265, by @garretrieger.

• 4 pull requests merged.

  • 16 September 2026

    Cache IntSet's hash value. w3c/ift-encoder#270.

  • 14 September 2026

    Update to latest ift-encoder-data. w3c/ift-encoder#267.

  • 14 September 2026

    Fix non-determinism in segmenter w3c/ift-encoder#266.

  • 10 September 2026

    Remove probabilities stored on Segment w3c/ift-encoder#265.

• 1 pull request received 5 new comments.

  • Latest comment 29 September 2026

    Add support for merging overlapping scripts w3c/ift-encoder#268 (5 comments by @garretrieger, @skef)

w3c/ift-encoder-data

• 1 issue opened.

  • 2 September 2026

    Language_ja has identical codepoint coverage to Script_japanese — could language files be unfiltered aggregations of the language's pages? w3c/ift-encoder-data#8, by @terkel.

• 1 issue received 2 new comments.

  • Latest comment 7 September 2026

    Language_ja has identical codepoint coverage to Script_japanese — could language files be unfiltered aggregations of the language's pages? w3c/ift-encoder-data#8 (2 comments by @garretrieger, @terkel)
• 1 pull request opened.

  • 14 September 2026

    Add a unigram only version of the frequency data. w3c/ift-encoder-data#9, by @garretrieger.

• 1 pull request merged.

  • 14 September 2026

    Add a unigram only version of the frequency data. w3c/ift-encoder-data#9.

w3c/ift-client-tests

• 1 issue closed.

  • 5 September 2026

    Implement Test for Conformance Requirement: apply-table-keyed w3c/ift-client-tests#9.

• 1 pull request opened.

  • 2 September 2026

    Add tests for apply-table-keyed w3c/ift-client-tests#56, by @terkel.

• 1 pull request merged.

  • 5 September 2026

    Add tests for apply-table-keyed w3c/ift-client-tests#56.

• 1 pull request received 3 new comments.

  • Latest comment 8 September 2026

    Add tests for apply-table-keyed w3c/ift-client-tests#56 (3 comments by @garretrieger)

Past meetings

• 4 meetings.

  • 27 August 2026

    WebFonts WG Zoom call, 27 August 2026.

  • 20 August 2026

    WebFonts WG Zoom call, 20 August 2026.

  • 13 August 2026

    WebFonts WG Zoom call, 13 August 2026.

  • 6 August 2026

    WebFonts WG Zoom call, 6 August 2026.

GitHub

w3c/ift-encoder

• 5 issues opened.

  • 25 August 2026

    Optimization Opportunity: variable brotli quality level. w3c/ift-encoder#262, by @garretrieger.

  • 25 August 2026

    Better support for overlapping scripts (eg. CJK) in the segmenter w3c/ift-encoder#261, by @garretrieger.

  • 25 August 2026

    Implement support for "include_all_segment_patches" in the compiler. w3c/ift-encoder#260, by @garretrieger.

  • 25 August 2026

    Implement support for "max_depth" in the compiler. w3c/ift-encoder#259, by @garretrieger.

  • 6 August 2026

    DEP_GRAPH_ONLY_WITH_SIMPLIFICATION + cost-based merging fails with "There must be at least one gid in the requested patch" on Noto Sans JP w3c/ift-encoder#256, by @terkel.

• 4 issues closed.

  • 26 August 2026

    Implement support for "include_all_segment_patches" in the compiler. w3c/ift-encoder#260.

  • 25 August 2026

    Implement support for "max_depth" in the compiler. w3c/ift-encoder#259.

  • 6 August 2026

    DEP_GRAPH_ONLY_WITH_SIMPLIFICATION + cost-based merging fails with "There must be at least one gid in the requested patch" on Noto Sans JP w3c/ift-encoder#256.

  • 5 August 2026

    Implement serialization of a Format 1 Patch map w3c/ift-encoder#107.

• 2 issues received 5 new comments.

  • Latest comment 6 August 2026

    DEP_GRAPH_ONLY_WITH_SIMPLIFICATION + cost-based merging fails with "There must be at least one gid in the requested patch" on Noto Sans JP w3c/ift-encoder#256 (3 comments by @garretrieger)

  • Latest comment 10 August 2026

    Implement serialization of a Format 1 Patch map w3c/ift-encoder#107 (2 comments by @garretrieger, @RoelN)
• 6 pull requests opened.

  • 26 August 2026

    Implement segmentation plan include_all_segment_patches setting. w3c/ift-encoder#264, by @garretrieger.

  • 25 August 2026

    Implement support for max depth in segmentation plan. w3c/ift-encoder#263, by @garretrieger.

  • 25 August 2026

    Update segmenter and compiler docs to reflect the current state. w3c/ift-encoder#258, by @garretrieger.

  • 6 August 2026

    Make SegmentationContext::AnalyzeSegment() perform condition simplification to match GlyphGroupings if enabled. w3c/ift-encoder#257, by @garretrieger.

  • 5 August 2026

    Update IFT Client to version w/o Format 1 w3c/ift-encoder#255, by @garretrieger.

  • 4 August 2026

    Fix missing template parameter. w3c/ift-encoder#254, by @garretrieger.

• 6 pull requests merged.

  • 26 August 2026

    Implement segmentation plan include_all_segment_patches setting. w3c/ift-encoder#264.

  • 25 August 2026

    Implement support for max depth in segmentation plan. w3c/ift-encoder#263.

  • 25 August 2026

    Update segmenter and compiler docs to reflect the current state. w3c/ift-encoder#258.

  • 6 August 2026

    Make SegmentationContext::AnalyzeSegment() perform condition simplification to match GlyphGroupings if enabled. w3c/ift-encoder#257.

  • 5 August 2026

    Update IFT Client to version w/o Format 1 w3c/ift-encoder#255.

  • 4 August 2026

    Fix missing template parameter. w3c/ift-encoder#254.

w3c/IFT

• 1 pull request merged.

  • 4 August 2026

    Remove Patch Map Format 1 from the specification. w3c/IFT#311.