v1.25.1
hexgrad/kokorov1.25.1Sep 28, 2026by abimaelmartell
Upgrading?
AI Summary
This release addresses font decoding bugs that were causing text corruption and incorrect rendering of ligatures and special characters in Type1 and other font types.
Key Highlights
- Fix text loss in kerned runs for fonts with 2-byte ToUnicode CMaps
- Add support for Type1 font ligatures using built-in encoding
- Improve ToUnicode CMap repair accuracy to avoid common word misinterpretation
New Features
- Fixed 2-byte ToUnicode decoding
- Added Type1 ligature support
- Improved CMap repair heuristics
Full Release Notes
Changes since 1.25.0: - Read simple fonts (Type1, TrueType, Type3) one byte per code when their ToUnicode CMap declares a two-byte codespace: text shown as a kerned run of short strings no longer loses every two-byte string (`Income Statement` read as `Iometatent`). The stale-CMap check for Type1 fonts judges such a CMap too, and the page detector counts such a font's text byte by byte (#595). - Read a Type1 font whose `/Encoding` names no base encoding through the built-in encoding of its embedded program (PDF 32000-1:2008, Table 114): TeX's fonts read their ligatures (`efficiency`, was `eciency`), curly quotes, dashes and math symbols. A code the program leaves at `.notdef` reads as nothing, the word space excepted, and the base-14 width fallback measures such fonts as they read (#596). - Take a repaired ToUnicode CMap for a string of one or two glyphs only on evidence beyond short common words: `engagement` no longer reads as `engageaent`, `AND` as `ANa` or `Three` as `ThaTe` (#597). No API changes. Release preparation: #604. [Full changelog](https://github.com/firecrawl/pdf-inspector/compare/v1.25.0...v1.25.1)
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