Version 6.0.0, 2025-08-11

What's new

Security (SEC)

• Limit decompressed size for FlateDecode filter (#3430) by @stefan6419846

Deprecations (DEP)

• Drop Python 3.8 support (#3412) by @stefan6419846

New Features (ENH)

• Move BlackIs1 functionality to tiff_header (#3421) by @j-t-1

Robustness (ROB)

• Skip Go-To actions without a destination (#3420) by @badGarnet

Developer Experience (DEV)

• Update code style related libraries (#3414) by @stefan6419846
• Update mypy to 1.17.0 (#3413) by @stefan6419846
• Stop testing on Python 3.8 and start testing on Python 3.14 (#3411) by @stefan6419846

Maintenance (MAINT)

• Cleanup deprecations (#3424) by @stefan6419846

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Version 5.9.0, 2025-07-27

What's new

New Features (ENH)

• Automatically preserve links in added pages (#3298) by @larsga
• Allow writing/updating all properties of an embedded file (#3374) by @Arya-A-Nair

Bug Fixes (BUG)

• Fix XMP handling dropping indirect references (#3392) by @stefan6419846

Robustness (ROB)

• Deal with DecodeParms being empty list (#3388) by @stefan6419846

Documentation (DOC)

• Document how to read and modify XMP metadata (#3383) by @stefan6419846

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Version 5.8.0, 2025-07-13

What's new

New Features (ENH)

• Implement flattening for writer (#3312) by @PJBrs

Bug Fixes (BUG)

• Unterminated object when using PdfWriter with incremental=True (#3345) by @m32

Robustness (ROB)

• Resolve some image extraction edge cases (#3371) by @stefan6419846
• Ignore faulty trailing newline during RLE decoding (#3355) by @henningkoertelgmg
• Gracefully handle odd-length strings in parse_bfchar (#3348) by @stefan6419846

Developer Experience (DEV)

• Modernize license specifiers (#3338) by @stefan6419846

Maintenance (MAINT)

• Reduce max-complexity of tool.ruff.lint.mccabe (#3365) by @j-t-1
• Refactor text extraction code by @MartinThoma

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Version 5.7.0, 2025-06-29

What's new

Performance Improvements (PI)

• Performance optimization for LZW decoding (#3329) by @henningkoertelgmg

Robustness (ROB)

• Flate decoding for streams with faulty tail bytes (#3332) by @henningkoertelgmg
• dc_creator could be a Bag as well (#3333) by @stefan6419846
• Handle tree being NullObject when retrieving named destinations (#3331) by @stefan6419846

Maintenance (MAINT)

• Move inline-image mappings to constants (#3328) by @stefan6419846

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Version 5.6.1, 2025-06-22

What's new

New Features (ENH)

• Add PDF/A XMP metadata support (#3314) by @Arya-A-Nair

Robustness (ROB)

• Deal with annotations not being lists on merge (#3321) by @stefan6419846
• Handle NullObject for cmap encoding Differences entry (#3317) by @stefan6419846

Developer Experience (DEV)

• Update ruff to 0.12.0 (#3316) by @stefan6419846

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Version 5.6.0, 2025-06-01

What's new

New Features (ENH)

• Add basic support for JBIG2 by using jbig2dec (#3163) by @stefan6419846

Bug Fixes (BUG)

• Fix crashes by removing unnecessary line (#3293) by @larsga
• Add delimiters to NameObject.renumber_table (#3286) by @ztravis

Robustness (ROB)

• Handle DecodeParms being a NullObject (#3285) by @stefan6419846

Code Style (STY)

• Update to mypy 1.16.0 (#3300) by @stefan6419846

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Version 5.5.0, 2025-05-11

What's new

New Features (ENH)

• Add support for IndirectObject.iter (#3228) by @bryan-brancotte
• Allow filtering by font when removing text (#3216) by @samuelbradshaw

Bug Fixes (BUG)

• Add missing named destinations being ByteStringObjects (#3282) by @stefan6419846
• Get font information more reliably when removing text (#3252) by @samuelbradshaw
• T* 2D Translation consistent with PDF 1.7 Spec (#3250) by @hackowitz-af
• Add font stack to q/Q operations in layout mode (#3225) by @hackowitz-af
• Avoid completely hiding image loading issues like exceeding image size limits (#3221) by @stefan6419846
• Using compress_identical_objects on transformed content duplicates differing content (#3197) by @danio
• Consider BlackIs1 parameter for CCITTFaxDecode filter (#3196) by @stefan6419846

Robustness (ROB)

• Deal with insufficient cm matrix during text extraction (#3283) by @stefan6419846
• Allow merging when annotations miss D entry (#3281) by @stefan6419846
• Fix merging documents if there are no Dests (#3280) by @stefan6419846
• Fix crash on malformed action in outline (#3278) by @larsga
• Fix compression issues for removed images which might be None (#3246) by @stefan6419846
• Attempt to deal with non-rectangular FlateDecode streams (#3245) by @stefan6419846
• Handle some None values for broken PDF files (#3230) by @stefan6419846

Developer Experience (DEV)

• Multiple style improvements by @j-t-1
• Update ruff to 0.11.0 by @stefan6419846

Maintenance (MAINT)

• Conform ASCIIHexDecode implementation to specification (#3274) by @j-t-1
• Modify comments of filters that do not use decode_parms (#3260) by @j-t-1

Code Style (STY)

• Simplify warnings & debugging in layout mode text extraction (#3271) by @hackowitz-af
• Standardize mypy assert statements (#3276) by @j-t-1

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Version 5.4.0, 2025-03-16

What's new

New Features (ENH)

• Add support for IndirectObject.__contains__ (#3155) by @noamkush

Bug Fixes (BUG)

• Fix detection of inline images followed by names or numbers (#3173) by @stefan6419846

Robustness (ROB)

• Consider root objects without catalog type as fallback (#3175) by @stefan6419846
• Raise proper error on infinite loop when reading objects (#3169) by @stefan6419846

Documentation (DOC)

• Mention memory consumption of text extraction (#3168) by @stefan6419846

Developer Experience (DEV)

• Upgrade to ruff 0.10.0 (#3191) by @stefan6419846

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Version 5.3.1, 2025-03-02

What's new

Bug Fixes (BUG)

• Use the correct name StandardEncoding for the predefined cmap (#3156) by @stefan6419846
• Handle inline images containing EI sequences (#3152) by @stefan6419846
• Fix check box value which should be name object (#3124) by @stefan6419846
• Fix stream position on inline image fallback extraction (#3120) by @stefan6419846
• Fix object count for incremental writer (#3117) by @m32

Robustness (ROB)

• Avoid index errors on empty lines in xref table (#3162) by @stefan6419846
• Improve handling of LZW decoder table overflow (#3159) by @stefan6419846
• Ignore non-numbers for width when building font width map (#3158) by @stefan6419846
• Avoid negative seek values when reading partially broken files (#3157) by @stefan6419846

Documentation (DOC)

• Fixed PageObject.images example usage for replacing image (#3149) by @jutoth

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Version 5.3.0, 2025-02-09

What's new

New Features (ENH)

• Handle attachments in /Kids and provide object-oriented API (#3108) by @stefan6419846

Bug Fixes (BUG)

• Handle annotations being None on merging (#3111) by @stefan6419846

Robustness (ROB)

• Prevent excessive layout mode text output from Type3 fonts (#3082) by @shartzog

Documentation (DOC)

• stefan6419846 becomes BDFL of pypdf (#3078) by @MartinThoma

Developer Experience (DEV)

• Remove ignoring multiple Ruff rules by @j-t-1
• Remove unused mutmut configuration (#3092) by @stefan6419846

Testing (TST)

• Fix warning assertions to use pytest.warns() (#3083) by @mgorny

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