Issues

• Performance issue in PdfReader with undefined-reference recovery scan

  nf-performance
  py-pdf/pypdf#4428 · Filter by author damasiyachiranj opened on Nov 14, 2026
  3

• Missing recursion guard in ArrayObject.read_from_stream() leads to uncaught RecursionError

  is-robustness-issue
  py-pdf/pypdf#4427 · Filter by author damasiyachiranj opened on Nov 14, 2026
  3

• Viewer preferences stored as indirect objects are returned unresolved

  is-robustness-issue
  py-pdf/pypdf#4421 · Filter by author Krushil-Dhankecha opened on Nov 13, 2026

• "EI stream not found" error when a RunLength inline image contains a 0x80 data byte and is longer than 8 KB

  needs-discussionworkflow-images
  py-pdf/pypdf#4419 · Filter by author johnny-knight-two opened on Nov 12, 2026
  3

• ROB: Corrupted trailer /ID of a non-array type is silently exposed instead of failing

  is-robustness-issue
  py-pdf/pypdf#4418 · Filter by author AP24110011695 opened on Nov 12, 2026

• Decimal page labels can be 0 or negative, where the other numbering styles fall back to the page position

  workflow-bookmarks
  py-pdf/pypdf#4405 · Filter by author Krushil-Dhankecha opened on Nov 11, 2026

• [BUG] get_pages_showing_field crashes for a widget pointing to an orphan page

  is-robustness-issue
  py-pdf/pypdf#4397 · Filter by author agarwalla-chirag opened on Nov 10, 2026

• BrotliDecode ignores TIFF/PNG predictors: tested fix available for maintainer takeover

  workflow-imagesworkflow-text-extraction
  py-pdf/pypdf#4384 · Filter by author gregjotau opened on Nov 9, 2026
  3

• extract_text: a Type0 font whose /Encoding is an embedded CMap reads with a NUL before every character

  needs-pdfworkflow-text-extraction
  py-pdf/pypdf#4379 · Filter by author DigitalBluff opened on Nov 9, 2026
  2

• 7.0.0: DeprecationError for abbreviated filter names (/A85, /Fl) in regular streams breaks text extraction

  needs-discussionworkflow-text-extraction
  py-pdf/pypdf#4371 · Filter by author prometheus-maker opened on Nov 6, 2026
  1

• Is the full copy of a BytesIO held by PdfReader since 6.21.2 intended?

  is-maintenance
  py-pdf/pypdf#4369 · Filter by author jleknes opened on Nov 6, 2026
  1

• BUG: embedded CFF built-in encoding overrides /Encoding with /BaseEncoding + /Differences when fontTools is installed

  workflow-text-extraction
  py-pdf/pypdf#4343 · Filter by author KRF-Technologies opened on Nov 2, 2026

• add_outline_item() writes an invalid destination for a page that is not in the writer

  needs-discussionworkflow-bookmarks
  py-pdf/pypdf#4341 · Filter by author MartinThoma opened on Nov 2, 2026

• add_outline_item(before=...) ignores before parameter

  is-bugworkflow-bookmarks
  py-pdf/pypdf#4340 · Filter by author MartinThoma opened on Nov 2, 2026

• /Indexed images without a filter are extracted as black images

  workflow-images
  py-pdf/pypdf#4317 · Filter by author MartinThoma opened on Oct 30, 2026

• Clarify which write operations are allowed on PdfReader

  breaking-changeneeds-discussionPdfReader
  py-pdf/pypdf#4313 · Filter by author kholdrex opened on Oct 30, 2026
  2

• extract_text() outputs raw glyph names like /f_i and /a.sc from font /Differences

  workflow-text-extraction
  py-pdf/pypdf#4309 · Filter by author michaelkillgta opened on Oct 29, 2026

• PNG predictor causes incorrect extraction of 1-bit and 4-bit images

  workflow-images
  py-pdf/pypdf#4308 · Filter by author Allgore1101 opened on Oct 29, 2026

• XMP: Allow dc:title to be an attribute instead of an element

  is-robustness-issueworkflow-metadata
  py-pdf/pypdf#4277 · Filter by author stefan6419846 opened on Oct 27, 2026

• Allow encryption with MD5 in FIPS environments

  is-featureneeds-discussionworkflow-encryption
  py-pdf/pypdf#4276 · Filter by author stefan6419846 opened on Oct 27, 2026

• Return bytes from pdf_header

  breaking-changeneeds-discussion
  py-pdf/pypdf#4275 · Filter by author j-t-1 opened on Oct 27, 2026
  7

• 6.21.2 rejects AES-128 PDFs whose crypt-filter /Length is written in bits ("Invalid encryption key length: 1024 bits")

  is-regressionworkflow-encryption
  py-pdf/pypdf#4260 · Filter by author fsz-codeshop opened on Oct 26, 2026
  2

• Meta: Refactor some code out of large modules

  Meta
  py-pdf/pypdf#4247 · Filter by author stefan6419846 opened on Oct 23, 2026

• Migrate GitHub pages to dedicated workflow

  is-maintenanceMetanf-documentation
  py-pdf/pypdf#4241 · Filter by author stefan6419846 opened on Oct 21, 2026
  2

• Limit size of inline image data

  needs-discussionworkflow-images
  py-pdf/pypdf#4196 · Filter by author stefan6419846 opened on Oct 13, 2026
  4