PDF Proof

Use this skill when the user needs visual proof that specific values exist in a PDF — not just to read a PDF, but to see exactly where a number, amount, clause, or field appears on the page with a highlighted screenshot. Trigger when someone is cross-referencing a PDF against something else (a form they're filling out, a claim, a conversation, another document) and needs confirmation with evidence. Common signals: entering data into TurboTax or a form and pulling source numbers from last year's return; asking an accountant to verify reported figures; checking contract terms before sending to l

77 stars 3 forksDocuments & Office Files

Install

skills CLI (Claude Code, Cursor, Codex and more)

npx skills add metedata/pdf-proof --skill pdf-proof

Manual install

git clone --depth 1 https://github.com/metedata/pdf-proof.git /tmp/pdf-proof
mkdir -p ~/.claude/skills
cp -r /tmp/pdf-proof/. ~/.claude/skills/pdf-proof

Personal skills live in ~/.claude/skills. Use .claude/skills in a project folder to share a skill with your team.

From the SKILL.md

# PDF Proof Page Generator

## What This Skill Does

When a user needs to verify that specific values match their source PDF documents, this skill:

1. Searches the PDF(s) for the exact text of each value
2. Crops a tight, readable section around each match
3. Draws a translucent orange highlight over the found value (using exact text coordinates, not guesswork)
4. Cross-checks by reading text back from the highlighted region to confirm correctness
5. Generates a clean HTML proof page with a summary table, confidence indicators, and per-value proof cards showing the actual screenshots

The output is a standalone HTML file that references cropped PNG screenshots — a visual audit trail the user can keep, share, or refer back to.

**Important:** Always generate the HTML proof page in your first response. Do not just show screenshots inline or summarize values in chat — the shareable proof document is the whole point. Find, extract, and assemble the proof page in one pass.

## How It Works

The key insight is using PyMuPDF's `page.search_for(text)` to get **exact PDF-coordinate rectangles** for each value, then using those coordinates to draw highlights at mathematically precise positions. This avoids the problem of CSS-percentage-based overlays that never quite land in the right spot.

### Step-by-Step Process

#### 1. Identify what needs to be proven

From the user's request, extract:
- **Values to verify**: The specific numbers, amounts, or text the user wants confirmed

Read the full skill on GitHub

Details

Skill name: pdf-proof
Repository: metedata/pdf-proof
License: MIT
Repo updated: 2 April 2026

FAQ

What does the PDF Proof skill do?

How do I install the PDF Proof skill?

skills CLI (Claude Code, Cursor, Codex and more): npx skills add metedata/pdf-proof --skill pdf-proof. Skills go in ~/.claude/skills (personal) or .claude/skills (project), and Claude loads them automatically when a task matches the description.

Is PDF Proof popular?

It lives in metedata/pdf-proof, which has 77 GitHub stars and 3 forks.

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