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Parity: titles and the PDF/X row say only what is implemented (#6300)

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* Parity: titles and the PDF/X row say only what is implemented

* Parity: the PDF/X row says removal matches the pdfxid: prefix only

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

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Co-authored-by: eliets2 <287273517+eliets2@users.noreply.github.com>
Co-authored-by: FredApps <153173854+FredApps@users.noreply.github.com>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
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eliets2Claude Opus 5.5eliets2FredApps
 authored and GitHub committed 2026-11-05 20:32:34 +01:00
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docs/pdf-spec-parity.md
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@@ -2,7 +2,7 @@
> Integration update 2026-10-30: lossless JBIG2 generic and exact-copy symbol coding are included; no lossy substitution. Combined tests passed at bdf5620; the subsequent review fixes require fresh CI.
> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-30 · **Change:** minor (§7.4: JBIG2 decoding in `pdfcraft-filters`, so redaction clears JBIG2 scans; earlier, §7.4: redaction decodes CCITT fax images, Group 3 on bytes aside) · **Target:** Adobe Acrobat Pro (Acrobat DC, continuous track 26.002.21931, macOS)
> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-11-05 · **Change:** minor (subset standards: the PDF/A rows name 2b and 3b only, and the PDF/X row says what is there — the identification is carried through Combine and can be removed; no verifier, no converter) · **Target:** Adobe Acrobat Pro (Acrobat DC, continuous track 26.002.21931, macOS)
How much of ISO 32000-2 (PDF 2.0) and the PDF subset standards PdfCraft implements, set against
what Acrobat Pro implements. This is PdfCraft's equivalent of a "geometry" or "codec" checklist:
@@ -121,7 +121,7 @@ are borrowed; PDF 2.0 additions and most subset standards are missing. **150–2
| PDF/A-1a/b (ISO 19005-1) | verify, convert | none | |
| PDF/A-2a/b/u, PDF/A-3a/b/u | verify, convert | **partial**: 2b and 3b structural rules and conversion (sRGB intent; not CMYK) | |
| PDF/A-4, 4e, 4f | verify, convert | none | |
| PDF/X-1a, X-3, X-4 (ISO 15930) | verify, convert | none | |
| PDF/X-1a, X-3, X-4 (ISO 15930) | verify, convert | **partial**: PDF/X declarations are carried through Combine and can be removed (`standards_remove_id`, which matches the `pdfxid:` prefix only); no verifier, no converter | |
| PDF/UA-1, PDF/UA-2 (ISO 14289) | verify (Preflight), checker | Accessibility Checker (32 rules, Acrobat's own), no PDF/UA verification | |
| PDF/E, PDF/VT | verify, convert | none | |
| Preflight (profiles, fixups, reports) | hundreds of profiles | none | |
@@ -132,6 +132,7 @@ are borrowed; PDF 2.0 additions and most subset standards are missing. **150–2
| Date | Change | Summary |
|---|---|---|
| 2026-11-05 | minor | Subset standards: the PDF/A rows name 2b and 3b only, and the PDF/X row says what is there — the identification is carried through Combine and can be removed; no verifier, no converter. No feature status changed |
| 2026-10-30 | minor | §7.4: JBIG2 decoding (`hayro-jbig2`) in `pdfcraft-filters`, which `Document::decoded_image` uses with the image's `/JBIG2Globals`: export reads JBIG2 behind other filters too, and redaction clears pixels in JBIG2 images instead of removing them whole (one whose page isn't its size still is) |
| 2026-10-26 | minor | §7.4: redaction clears pixels in CCITT fax images through the CCITT decoder, instead of removing them whole (Group 4 and Group 3 off bytes; Group 3 on bytes is still removed whole, as the bootstrap renderer may draw it as other rows than the decoder reads) |
| 2026-10-26 | minor | §7.4: CCITT decoding (`hayro-ccitt`) in `pdfcraft-filters`, for export and the Optimizer |
parity/acrobat-features.toml
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@@ -7996,7 +7996,7 @@ notes = ""
[[feature]]
id = "optimize.pdfa-validate"
title = "Verify PDF/A compliance (1-4)"
title = "Verify PDF/A compliance (2b and 3b so far; 1, 2a, 2u, 3a, 3u, 4 not yet)"
area = "K"
tier = "P1"
milestone = "M11"
@@ -8008,7 +8008,7 @@ notes = "PDF/A-2b/3b structural rules: identification, encryption, output intent
[[feature]]
id = "optimize.pdfa-convert"
title = "Save as PDF/A (1b, 2b, 3b, 4)"
title = "Save as PDF/A (2b and 3b so far)"
area = "K"
tier = "P1"
milestone = "M11"