How to install PDF Modifier in Claude Desktop
To install PDF Modifier in Claude Desktop, open Settings, Developer, Edit Config, paste the "pdf-modifier" block into mcpServers in claude_desktop_config.json, and restart the app.
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- 1
Open the config file
In Claude Desktop, go to Settings, then Developer, then Edit Config.
- 2
Add the server
Paste this into the file. If you already have servers, add the "pdf-modifier" entry inside your existing mcpServers block.
{ "mcpServers": { "pdf-modifier": { "command": "uvx", "args": [ "pdf-modifier" ] } } } - 3
Restart Claude Desktop
Quit the app fully and open it again. The server appears under the tools icon in a new chat.
Config file: macOS: ~/Library/Application Support/Claude/claude_desktop_config.json · Windows: %APPDATA%\Claude\claude_desktop_config.json
MCP servers run with your permissions. If PDF Modifier needs an API key, add it under env in the config. Check its README.
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Questions
Does PDF Modifier work in Claude Desktop?
Yes. Claude Desktop supports local mcp servers through a config file, remote servers as connectors, and PDF Modifier installs with the steps above.
PDF Modifier does not show up in Claude Desktop. What now?
Restart Claude Desktop fully, check the JSON is valid, and make sure uv (for uvx) is installed. See common MCP errors and fixes.
Is PDF Modifier safe?
It scores 44 of 100. Review the code before you install it, and only give it the access it needs. Grades and details.
