PDF Slim — PDF Compression for AI MCP Server

by zhaoyaqi18 Your server? Claim it

answering

PDF Slim — PDF Compression for AI is answering right now. Last checked 9 min ago. It exposes 3 tools.

Compress PDFs to exact target sizes (82-93% smaller). Tools: compress_pdf, optimize_pdf, inspect_pdf

Uptime history 69 days of history · worst day 95%

69 days agonow

100.0%

Uptime 24h

92 of 92 checks

Tools

read from the server

154 ms

Response time

average over 24h

open, no key

Access

streamable-http

Nothing serious here today

Today is the operative word: we check PDF Slim — PDF Compression for AI every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 9 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add pdfslim --transport http https://api.pdfslim.app/mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "pdfslim": {
      "url": "https://api.pdfslim.app/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.pdfslim]
url = "https://api.pdfslim.app/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "pdfslim": {
      "url": "https://api.pdfslim.app/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "pdfslim": {
      "url": "https://api.pdfslim.app/mcp"
    }
  }
}

Available tools 3

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

compress

compress_pdf

Compress a PDF file to reduce its size. Renders pages and re-encodes as JPEG, iterating quality/resolution to hit a target size. Use this when a user wants to shrink a PDF (e.g. to 500KB, 1MB, or "smaller"). Free anonymous tier: 20 calls/day per IP, files up to 10MB. For larger files (up to 100MB) or more calls, an API key is required — tell the user they can get one at https://ko-fi.com/yugutou/shop, or point them to the free website https://pdfslim.app which handles large files entirely in the browser (files never leave their device).

inspect

inspect_pdf

Inspect a PDF: page count, file size, password protection. Use before deciding how to process a PDF. Free anonymous tier: 20 calls/day per IP. More calls need an API key (https://ko-fi.com/yugutou/shop).

optimize

optimize_pdf

Lossless PDF optimization: garbage collection, stream re-compression. No quality loss. Good for PDFs with redundant data; effect is small on already-optimized files. Free anonymous tier: 20 calls/day per IP, files up to 10MB. Larger files / more calls need an API key (https://ko-fi.com/yugutou/shop) or the free website https://pdfslim.app.

Endpoints

URL	Transport	State	Latency	Checked
https://api.pdfslim.app/mcp	streamable-http	answering	209 ms	9 min ago

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PDF Slim — PDF Compression for AI — questions

Answers built from our own checks of this server.

What can PDF Slim — PDF Compression for AI do?

It exposes 3 tools, read directly from the server on our last check. Among them: compress_pdf, inspect_pdf, optimize_pdf. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is PDF Slim — PDF Compression for AI working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 92 of 92 checks got a reply (100.0%), average response time 154 ms. The bar chart above shows every period we have measured.

How do I connect PDF Slim — PDF Compression for AI?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does PDF Slim — PDF Compression for AI need an API key?

No. PDF Slim — PDF Compression for AI completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 3 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is PDF Slim — PDF Compression for AI?

It answers our handshake in 154 ms on average, which is faster than 73% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.