--- title: "Anthropic PDF Processing: review, setup & limitations · Undominated.ai" canonical: https://undominated.ai/skills/anthropics-pdf/ description: "Covers PDF extraction, transformation and form filling, with separate workflows for actual form fields and image-based overlays." --- # Anthropic PDF Processing: review, setup & limitations · Undominated.ai > Covers PDF extraction, transformation and form filling, with separate workflows for actual form fields and image-based overlays. [← Explore all skills](/skills/) DOCUMENTS / Anthropic # Anthropic PDF Processing Covers PDF extraction, transformation and form filling, with separate workflows for actual form fields and image-based overlays. See setup guidance ↓Original source ↗ SOURCE REVIEW Reviewed 2026-09-21 Evidence 6 linked sources Publisher Anthropic Licence Anthropic custom terms ↗ Revision 34040c9c5685 Read what was—and wasn’t—checked ↓ “Use this skill whenever the user wants to do anything with PDF files. This includes reading or extracting text/tables from PDFs, combining or merging multiple” Anthropic · upstream description ↗ Our analysis follows below. 01 / THE REASONING ## Why this made the selection. - Form instructions require field discovery before filling, which avoids treating every PDF as the same format. - Includes an inspectable bounding-box helper for checking annotation layouts before writing output. ### A good fit for - Extracting text or tables from PDFs - Filling forms whose layout must be preserved ### Weigh up before choosing - The bounding-box helper prints failures without setting a failing exit code; callers must inspect its messages. - Its checks cover overlaps and text-box height, not a complete PDF, page-boundary or accessibility validation. - Restricted Anthropic terms apply; optional OCR and conversion tools must also be available. 02 / THE REVIEW RECORD ## What we actually inspected. Source review has boundaries. A clear record is more useful than a “safe” badge. ### Material inspected - skills/pdf/SKILL.md - skills/pdf/forms.md - skills/pdf/scripts/check_bounding_boxes.py - skills/pdf/LICENSE.txt ### Our findings - The main guide routes fillable and non-fillable PDFs to different procedures. - The inspected forms reference distinguishes coordinate conventions, making rendered-page checks important. - The helper operates on an authored field-map JSON file rather than inspecting the PDF itself. ### Not established by this review - Source inspection only; no skill installation or workflow execution was performed. The review applies to the material and revision named here. A newer upstream release can change its behavior. 03 / PUT IT TO WORK ## Add a skill to your workflow. Upstream setup instructions ↗ DOCUMENTED COMMAND /plugin install document-skills@anthropic-agent-skills Copy command ↗ Copying does not execute this command. It may retrieve a newer version than the reviewed source. - In Claude Code, first register the official marketplace with /plugin marketplace add anthropics/skills. - Install the document-skills plugin under the applicable Anthropic agreement, or use the document capabilities supplied in Claude. - This catalogue does not redistribute these restricted definitions or offer a cross-agent copying command. ### Before you start - Claude Code or an eligible Claude service - Applicable Anthropic service access and terms - Install the PDF/OCR dependencies needed for the selected operation in the authorized host. ### Compatibility Claude document-skills plugin · Python PDF libraries and optional OCR/Poppler command-line tools ### Read PDF contents and write documents or page images - Read PDF contents and write documents or page images - Execute local parsing, rendering or OCR tools - Password examples require care to avoid saving credentials in shell history ### Cost model Use is governed by the Anthropic service agreement; OCR and conversion require local compute. 04 / FOLLOW THE EVIDENCE ## The source trail. Our notes are separate from the original resource. Check upstream before adopting a new version. - Skill definition at reviewed revision ↗ Checked 2026-09-21 https://github.com/anthropics/skills/blob/34040c9c568585f6929bedeaad110ad08f079624/skills/pdf/SKILL.md Supports: summary, upstreamDescription, whySelected, bestFor, limitations, review, compatibility, access - Reviewed reference or helper: forms.md ↗ Checked 2026-09-21 https://github.com/anthropics/skills/blob/34040c9c568585f6929bedeaad110ad08f079624/skills/pdf/forms.md Supports: review, limitations, access - Reviewed reference or helper: scripts/check_bounding_boxes.py ↗ Checked 2026-09-21 https://github.com/anthropics/skills/blob/34040c9c568585f6929bedeaad110ad08f079624/skills/pdf/scripts/check_bounding_boxes.py Supports: review, limitations, access - Upstream license or licensing declaration ↗ Checked 2026-09-21 https://github.com/anthropics/skills/blob/34040c9c568585f6929bedeaad110ad08f079624/skills/pdf/LICENSE.txt Supports: license - Publisher installation and project documentation ↗ Checked 2026-09-21 https://github.com/anthropics/skills/blob/34040c9c568585f6929bedeaad110ad08f079624/README.md Supports: install, compatibility, access - Skills installer source formats and selective installation ↗ Checked 2026-09-21 https://github.com/vercel-labs/skills/blob/7407f3893ad4dceab546ac002c3ef806e4000c73/README.md Supports: install KEEP COMPARING ## Other approaches to consider. Related by category or shared topics. These are alternatives to inspect, not a measured quality order. [### Anthropic PowerPoint Presentations ↗ Guides new-slide generation and template editing with OOXML validation and rendered thumbnail checks.](/skills/anthropics-pptx/)[### Anthropic Spreadsheets ↗ Keeps spreadsheet formulas editable and requires recalculation plus explicit inspection of formula-error results.](/skills/anthropics-xlsx/)[### Anthropic Word Documents ↗ Separates new Word-document generation from editing existing OOXML, with explicit checks for tables, comments and tracked changes.](/skills/anthropics-docx/) [AI Tools ↗](/tools/)[Skills ↗](/skills/)[Agents ↗](/agents/)[MCP Servers ↗](/mcp-servers/)