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Interactive PDF Viewer

Open a PDF in a live viewer to highlight, annotate, fill forms and sign together.

Official Anthropicby AnthropicChecked October 18, 2026

A Cowork plugin from Anthropic that displays PDFs in an interactive viewer instead of only reading their text. You and Claude can mark up the same page, fill fields visually and place a signature or initials.

Who it is for

  • Office workers
  • Small business owners
  • Legal teams

Prompts to try

Once the skill is installed, ask for the result in plain words. Claude picks the skill up on its own.

Prompt 1
Open lease.pdf and highlight every clause about early termination
Prompt 2
Fill in this W-9 with my company details and let me check it before saving
Prompt 3
Mark up this contract with comments on anything unusual

How to install it

In Claude Code

  1. /plugin marketplace add anthropics/knowledge-work-plugins
  2. /plugin install pdf-viewer@knowledge-work-plugins

In Claude.ai

Add anthropics/knowledge-work-plugins as a marketplace under Customize > Plugins > Add > Add marketplace, then add the plugin from that list.

Good to know

Designed for Cowork; for plain text extraction the regular pdf skill is the better fit.

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How we checked it

Confirmed SKILL.md at pdf-viewer/skills/view-pdf/SKILL.md in anthropics/knowledge-work-plugins via the GitHub API; skill folder last changed 2026-03-24, repo has 29,992 stars and was pushed 2026-10-17; published in Anthropic's knowledge-work-plugins marketplace.

Source: github.com/anthropics/knowledge-work-plugins/tree/main/pdf-viewer/skills/view-pdf

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