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V4 (AES-128/RC4-128) /Encrypt without top-level /Length fails to decrypt (40-bit key derived instead of 128-bit)

Status: Open.

#523 In J-F-Liu/lopdf;

· ignaciano3 opened on Jul 9, 2026

Make ttf-parser optional / migrate off it (unmaintained — RUSTSEC-2026-0192)

Status: Open.

#514 In J-F-Liu/lopdf;

· losrodriguez17 opened on Jun 30, 2026

Tests broken on main: document_load_performance references missing assets/test.pdf

Status: Open.

#511 In J-F-Liu/lopdf;

· zamf opened on Jun 29, 2026

Claude Code review findings

Status: Open.

#494 In J-F-Liu/lopdf;

· qarmin opened on May 10, 2026

Better support for the non strict mode

Status: Open.

#484 In J-F-Liu/lopdf;

· rth opened on Mar 21, 2026

save_modern() produces corrupt encrypted PDFs (unencrypted ObjStm)

Status: Open.

#479 In J-F-Liu/lopdf;

· ComposerChrisF opened on Mar 16, 2026

[suggestion] Exclude assets from package?

Status: Open.

#466 In J-F-Liu/lopdf;

· tower120 opened on Feb 20, 2026

Parse error when encoding is an indirect reference

Status: Open.

#463 In J-F-Liu/lopdf;

· mjul opened on Jan 6, 2026

replace_text error

bug

Status: Open.

#452 In J-F-Liu/lopdf;

· Geobert opened on Nov 24, 2025

lopdf fails to parse pages tree when Object Stream is missing from xref (but PDFium and PDF.js succeed!)

bug

parsingAbout parsing a valid PDF fileAbout parsing a valid PDF file

Status: Open.

#449 In J-F-Liu/lopdf;

· segovb opened on Nov 6, 2025

Incorrect character spacing with external font

Status: Open.

#448 In J-F-Liu/lopdf;

· pmahoney opened on Oct 21, 2025

Bookmarks don't generate due to resulting_document.renumber_objects() called too early in Docs

Status: Open.

#447 In J-F-Liu/lopdf;

· AurumTheEnd opened on Oct 17, 2025