Expose Ghostscript's -dJPEGQ and image downsampling switches as
advanced, plugin-scoped options for tuning PDF/A output, without
polluting the central OcrOptions registry. The optimizer's existing
--jpeg-quality remains the recommended JPEG quality control.
- GhostscriptOptions gains jpeg_quality and jpeg_maxdpi fields and CLI
args (advanced help text). jpeg_quality=0 is honored as Ghostscript's
maximum compression rather than being silently coerced to the default.
- _exec.ghostscript.generate_pdfa() forwards both values; when
jpeg_maxdpi is set, downsample threshold is pinned at 1.0.
- _get_plugin_options falls back to extra_attrs for namespaced fields
so plugins can own their options without registering them centrally.
- Documentation explains the rationale: Ghostscript is the legacy path
(pypdfium + verapdf is preferred in v17+), the optimizer is the
supported file-size lever, and lowering quality is almost always a
better trade than downsampling.
Allow users to bypass the TaggedPDFError when processing Tagged PDFs
by setting --tagged-pdf-mode=ignore. This is useful when users know
they want to OCR a Tagged PDF despite the warning.
- 'default': Error if --mode is default, otherwise warn (current behavior)
- 'ignore': Always warn but continue processing (never error)
Add new options: --mode, --ocr-engine, --rasterizer,
--continue-on-soft-render-error, --tesseract-non-ocr-timeout,
--tesseract-downsample-large-images, --tesseract-downsample-above,
--unpaper-args (fish), --plugin (fish).
Update --output-type to include 'auto' as default.
Update --pdf-renderer to include 'fpdf2' and mark hocr as deprecated.
Remove non-working options: --remove-background, --threshold.
Migrate watcher.py and pdf_text_diff.py from typer to cyclopts for
CLI argument parsing. Update pyproject.toml to reflect the dependency
change in the watcher optional feature.
Lossy JBIG2 has been removed due to well-documented risks of character
substitution errors (e.g., 6/8 confusion). The --jbig2-lossy and
--jbig2-page-group-size arguments are now deprecated and ignored with
a warning.
Changes:
- Remove jbig2_lossy and jbig2_page_group_size from OCROptions
- Simplify optimize.py to use single-image JBIG2 encoding only
(no symbol dictionaries/JBIG2Globals)
- Remove convert_group() from jbig2enc.py
- Deprecate CLI args with warnings for backward compatibility
- Update documentation to explain lossless-only JBIG2
James R. Barlow
5HT2
PunkPangolinandGitHub
NilsRoandGitHub
Srikar SundaramandGitHub
comzineandGitHub
Doug RinckesandGitHub