Version 6.17.0, 2026-09-04

What's new

Security (SEC)

• Limit value for Roman numerals (#4047) by @stefan6419846

New Features (ENH)

• _cmap.py: Also parse encoding for embedded CFF Type1 fonts (#4032) by @PJBrs

Performance Improvements (PI)

• Cache repeated text extraction character lookups (#4036) by @petermik68-sudo

Bug Fixes (BUG)

• Treat an empty /Filter array as no filter when extracting images (#4026) by @Anai-Guo
• Detect a duplicate dictionary key whose first value is falsy (#4024) by @devYRPauli
• Make is_open=False collapse outline items (#3998) by @SomSamantray

Robustness (ROB)

• Multiple changes for wrong inputs by @RavSinghChandan
• Skip trailing duplicate %%EOF markers when locating startxref (#4015) by @Anai-Guo
• Do not crash on a non-array destination (#3976) by @eeshsaxena
• Handle annotations without subtype during merge (#3999) by @Nexlu1

Documentation (DOC)

• Use AnnotationFlag enum instead of plain integers (#3997) by @RavSinghChandan

Code Style (STY)

• Multiple small changes detected from test runs by @RavSinghChandan

Full Changelog