PDF Viewer vs conv2pdf
PDF Viewer is a plugin bundle for AI coding tools published by Anthropic. Marketplaces we read that list it: 1 (Claude: knowledge-work-plugins). conv2pdf is an MCP server published by conv2pdf.com. Marketplaces we read that list it: 2 (Official MCP Registry, Community GitHub marketplaces). As of our marketplace pass on 2026-10-15. This pair was picked by a reader, not by our comparison rule, so search engines are asked not to index the page.
Where each is published
| Marketplace |   conv2pdf | |
|---|---|---|
| Claude: knowledge-work-plugins | Listed Version: 0.2.0 Forks (GitHub): 3 361 Stars (GitHub): 29 647 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 1.0.1 Downloads/month (npm): 617 Downloads/week (npm): 189 Forks (GitHub): 0 Stars (GitHub): 0 Not marked · First seen |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
The facts side by side
| Fact | PDF Viewer | conv2pdf |
|---|---|---|
| Marketplaces that list it (differs) | 1 (worse) | 2 (better) |
| Stars (GitHub) (differs) | 29 647 (better) | 0 (worse) |
| Forks (GitHub) (differs) | 3 361 (better) | 0 (worse) |
| Last release | Not published | Not published |
| Where it runs (differs) | On your machine (@modelcontextprotocol/server-pdf) | On your machine (conv2pdf-mcp) |
| Transport (differs) | Not stated | stdio |
| Tools it declares | Not published | Not published |
| Environment variables it asks for (differs) | Not published | 1, secrets among them: 1 |
| Parts of the bundle (differs) | 6 | 2 |
| Licence (differs) | Not stated | MIT |
| Repository (differs) | github.com/anthropics/knowledge-work-plugins | github.com/jamalofski/conv2pdf-mcp |
| Changes in the last 7 days (differs) | 0 | 2 |
| First seen | 2026-10-11 | 2026-10-11 |
Lines where the two differ have a tinted background and bold values. Where the data itself says which value is better (more marketplaces, a larger figure of the same marketplace, a fresher release, a verified mark on a marketplace that lists both), the better one is also marked green with ▲ and the worse one red with ▼. Where it runs, the transport, the tools, the settings, hooks, the bundle's parts, the licence and the week's changes are marked only as different: more or fewer is not better in itself.
What each says it does
PDF Viewer
View, annotate, and sign PDFs in a live interactive viewer. Mark up contracts, fill forms with visual feedback, stamp approvals, and place signatures — then download the annotated copy.
conv2pdf
Convert Office files, images and e-books to PDF; merge, compress or protect local PDFs.
How to run each
PDF Viewer As a Claude Code plugin
/plugin marketplace add anthropics/knowledge-work-plugins
/plugin install pdf-viewer@knowledge-work-pluginsconv2pdf As a local MCP server: npm package
claude mcp add --env "CONV2PDF_API_KEY=<YOUR_CONV2PDF_API_KEY>" --transport stdio conv2pdf -- npx -y conv2pdf-mcpRequires: CONV2PDF_API_KEY (secret)
Commands built only from what the marketplaces declare; the full set for every client is on each card.
Tools each declares
Neither one's marketplaces publish a list of tools, so there is nothing to compare.
Settings each asks for
The marketplaces of PDF Viewer publish no settings it asks for, so we do not compare settings.
What it can do: PDF Viewer · What it can do: conv2pdf · Compare two other plugins
Data comes from the public marketplace file https://github.com/anthropics/knowledge-work-plugins/blob/HEAD/.claude-plugin/marketplace.json. Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Data comes from public marketplace files in GitHub repositories of their authors. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.