James R. Barlow efb83ad64f Add --ghostscript-jpeg-quality and --ghostscript-jpeg-maxdpi ...

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.

2026-05-25 10:20:54 -07:00

..

completion

…

flatpak

…

screencast

…

_webservice.py

…

batch.py

…

bisect_pdf.py

…

docker-compose.example.yml

…

example_plugin.py

…

ocrmypdf_compare.py

…

pdf_compare.py

…

pdf_text_diff.py

…

synology.py

…

watcher.py

…

webservice.py

…