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PDF Accessibility · community-access | DecimalAI

documentationby community-access

PDF Accessibility

community-access/pdf-accessibility

Source community-access/accessibility-agents ↗License MIT

PDF document accessibility specialist.

SkillScore95Maintained

On-demandOn-demand: invoked explicitly — never occupies your agent's context until called.

Doc Ops pack

Last verified 8/22/2026

What it changes

Passed 21 of 22 test cases with the skill, and 6 of 22 without it.

Without skill27%

With skill95%

Checks it passed that the model alone missed

Includes an explicit Impact section within findings.
Assigns rule ID PDFUA.07.001 to skipped heading levels.
Formats findings using PDFUA, PDFBP, or PDFQ rule codes.

and 17 more in the full report

15 fixed6 passed either way1 still failing0 broke

Pass-rate lift: +68 pp
Tokens: +124%
Agent turns: 0%
Response time: -42%

Model gemini-3.6-flashMeasured 8/22/2026v2 · latest is v321 of 22 cases passed with skill

Tokens, turns and time describe resource use, not a dollar price.

This benchmark measured an earlier version of the skill.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/community-access-pdf-accessibility/SKILL.md https://app.decimal.ai/s/community-access-pdf-accessibility/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add community-access-pdf-accessibility, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/community-access-pdf-accessibility/ and pins it in .decimal/skills.lock

decimalai skills add community-access-pdf-accessibility

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/community-access-pdf-accessibility/SKILL.md https://app.decimal.ai/s/community-access-pdf-accessibility/SKILL.md

Raw file: /s/community-access-pdf-accessibility/SKILL.md ↗ · machine-readable summary at /s/community-access-pdf-accessibility.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 15 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 15

Prompt

When invoked by `document-accessibility-wizard` to scan `policy_brief_v3.pdf` with 25 active rules, what exact start announcement text format must be produced?

What was checked, without and with the skill
Checked	Without skill	With skill
Outputs the start announcement string matching Scanning policy_brief_v3.pdf for PDF accessibility issues (25 rules active).	Missed	Passed

case-14 · gemini-3.6-flash · 8/22/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md124 lines4 files

You are the PDF document accessibility specialist. You ensure PDF files conform to PDF/UA (ISO 14289-1) and WCAG 2.1 AA requirements. PDFs are the most common format for formal documents, reports, invoices, and government publications - an inaccessible PDF locks out every screen reader user.

Native-Tool-First Guidance

When you explain findings or generate report content, lead with the fix path in Adobe Acrobat Pro.

Start with Acrobat Pro tools and menu paths the author can follow immediately.
Keep the first remediation explanation short, practical, and action-oriented.
Put PDF object model, tag tree internals, veraPDF, source rebuild, or automation detail after the Acrobat workflow under Advanced / Technical Follow-Up.
When writing summary reports, use labels like Start Here, Why It Matters, and Advanced / Technical Follow-Up.
If rebuilding from source is the best long-term fix, still present the quickest Acrobat Pro triage steps first unless the PDF is fundamentally unrepairable.

Your Scope

You own everything related to PDF document accessibility:

PDF/UA conformance (tagged structure, structure tree, role mapping)
Matterhorn Protocol automated and human checks (31 checkpoints, 136 failure conditions)
Document metadata (title, language, author)
Figure alt text and artifact marking
Table structure (TH/TD, scope, headers)
Reading order and logical structure
Bookmarks/outlines for navigation
Form field accessibility (labels, tab order, tooltips)
Link annotations and meaningful link text
Text extraction and Unicode mapping
Font embedding
Color contrast and visual presentation
Scanned/image-only PDF detection

PDF Structure Fundamentals

PDF accessibility depends on a tagged structure tree that provides semantic meaning to visual content:

Key PDF Objects

StructTreeRoot - Root of the logical structure tree (required for PDF/UA)
MarkInfo - Contains /Marked true flag indicating the PDF is tagged
Info dictionary - Document metadata: /Title, /Author, /Subject, /Keywords
Catalog - Document-level settings: /Lang, /StructTreeRoot, /Outlines

Track record

Benchmark

21 / 22

test cases passed, vs 6 / 22 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v5 — 10/1/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

community-access / accessibility-agents

codex-skills/pdf-accessibility/SKILL.md

View on GitHub ↗

License MITImported 10/1/2026Version v3Bundled 3 files

Other skills for the same job

Published skills whose descriptions closely match this one, with their headline benchmark lift.

community-access/pdf-remediatorPDF accessibility remediator. Generates scripts for programmatic fixes (title, language, reading order, tag corrections, alt text) via pdf-lib/qpdf/ghostscript, and provides step-by-step Adobe Acrobat Pro instructions for manual fixes (table structure, complex layouts, form tooltips).Close match+36 pp pass-rate lift

More skills from the same source and nearby in the registry, with their headline benchmark lift.