build(deps): bump ocrmypdf from 16.13.0 to 17.0.1 in /pdf

[dependabot]

Bumps ocrmypdf from 16.13.0 to 17.0.1.

Changelog

Sourced from ocrmypdf's changelog.

v17.0.1

• Fixed output file size inflation when using pypdfium as rasterizer and force-ocr mode.

v17.0.0

Breaking changes

• Plugin interface migration: Plugin hooks now receive OcrOptions objects instead of argparse.Namespace objects. Most plugins will continue working due to duck-typing compatibility, but plugin developers should update their type hints from Namespace to OcrOptions.
• Built-in plugins no longer modify options in-place, improving immutability and code clarity.
• Lossy JBIG2 removed: The --jbig2-lossy and --jbig2-page-group-size options have been removed due to well-documented risks of character substitution errors. These options are now deprecated and will emit warnings if used. Only lossless JBIG2 compression is supported.
• PDF/A output behavior change: If neither Ghostscript nor verapdf is installed, --output-type auto (the new default) will produce a standard PDF instead of PDF/A. This is a change from previous versions where Ghostscript was required and PDF/A was always produced. This configuration is rare but users should be aware of the change.

New features

• pypdfium2 rasterizer: Added optional pypdfium2-based PDF rasterization plugin as an alternative to Ghostscript for page rendering. Use --rasterizer pypdfium to enable (requires pip install pypdfium2). The default --rasterizer auto prefers pypdfium when available and falls back to Ghostscript.

• Pluggable OCR engines: New --ocr-engine option allows selecting OCR engines:

  • auto (default): Uses Tesseract
  • tesseract: Explicit Tesseract selection
  • none: Skip OCR entirely for PDF processing-only workflows

  This prepares the foundation for future third-party OCR engine plugins.

• Smart PDF/A conversion: New --output-type auto (now the default) produces best-effort PDF/A output without requiring Ghostscript when the verapdf validator is available. Falls back to traditional Ghostscript conversion when needed.

• verapdf integration: Added optional verapdf validation for fast PDF/A conversion. When available, OCRmyPDF attempts speculative PDF/A conversion using pikepdf, validates with verapdf, and skips Ghostscript if validation passes.

• Optional Ghostscript: As a consequence of the changes above, Ghostscript is no longer a required dependency. It is optional.

• fpdf2 text renderer: Replaced legacy hOCR text renderer with new fpdf2-based implementation, providing better multilingual support and more accurate text positioning.

• Improved Occulta glyphless font: The new Occulta font provides better handling of zero-width markers and double-width CJK characters for accurate text layer positioning.

• Expanded multilingual font support: Added FontProvider infrastructure with language-aware font selection for Devanagari (Hindi, Sanskrit, Marathi, Nepali), CJK (Chinese, Japanese, Korean), Arabic script, and many other scripts. System font discovery reduces package size.

• Simplified mode selection: New --mode (-m) argument consolidates processing options:

... (truncated)

Commits

• 3abe8f7 v17.0.1 release notes
• 64f45b7 Fix pypdfium type checking
• 7e939ad Fix pypdfium rasterizer to respect raster_device colorspace
• 297fb78 Update uv.lock (for protobuf)
• ad30dd9 Merge branch 'release/v17'
• e77f79a Merge branch 'main' of github.com:ocrmypdf/OCRmyPDF
• c84fc56 Update CLI completions to match current options
• 0a0756b Tidy long lines and unnested with blocks
• c5d3ef4 Tighten ruff rules and modernize style
• 6b37583 Refactor: move ocr_element to a better location
• Additional commits viewable in compare view

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