Gamma Watermark Remover — MCP Server

An MCP server that lets Claude Desktop, Claude Code, and any MCP client remove the "Made with Gamma" watermark from PDF and PowerPoint (.pptx) files exported from Gamma.app — right on your machine. Just ask:

"remove the gamma watermark from ~/Downloads/deck.pdf"

Removal is structural and lossless: the badge image and its gamma.app hyperlink are deleted as document objects. Nothing is re-rendered, nothing is uploaded.

What is the Gamma Watermark Remover MCP Server?

The Gamma Watermark Remover MCP server connects the Model Context Protocol to a document-cleaning engine, so AI assistants can remove the "Made with Gamma" watermark from Gamma.app exports on your behalf. Instead of opening a separate tool, you stay in your conversation: point Claude at an exported PDF or PowerPoint file, and the badge — a discrete document object with a gamma.app hyperlink — is deleted structurally. Your text stays selectable, your slides stay editable, and with the local server nothing ever leaves your machine.

This is the same engine behind the gammaremover.com web app and the gamma-watermark-remover CLI, packaged for the MCP ecosystem: Claude Desktop, Claude Code, Cursor, Windsurf, and any other MCP-compatible client.

Setup

Claude Desktop

Add to claude_desktop_config.json (Settings → Developer → Edit Config):

{
  "mcpServers": {
    "gamma-watermark-remover": {
      "command": "uvx",
      "args": ["gamma-watermark-remover-mcp"]
    }
  }
}

Claude Code

claude mcp add gamma-watermark-remover -- uvx gamma-watermark-remover-mcp

Any other MCP client

The server speaks stdio. Command: uvx gamma-watermark-remover-mcp (or pipx run gamma-watermark-remover-mcp, or pip install gamma-watermark-remover-mcp then gamma-watermark-remover-mcp).

Remote endpoint (no install at all)

A hosted streamable-HTTP endpoint is available at https://gammaremover.com/mcp for agents that can't run a local server. It accepts file content as base64 (≤30MB), processes in memory only — nothing is stored or logged. For maximum privacy prefer the local stdio server above or the in-browser tool.

Tools

| Tool | What it does | |------|--------------| | remove_gamma_watermark(file_path, output_path?) | Cleans a .pdf/.pptx export; writes <name>-no-watermark.<ext> by default and reports exactly how many watermark objects were removed | | check_gamma_watermark_support(file_path) | Checks whether a file is a supported format before processing |

If the badge was flattened into the page image (rare), the result honestly says a watermark may remain instead of silently failing.

How it works

This server wraps the gamma-watermark-remover Python library:

• PDF (pypdf): drops link annotations targeting gamma.app/gamma.to and the draw op of the small bottom-right badge image (transformation-matrix tracked, size-guarded so backgrounds are never touched)
• PPTX (python-pptx): removes the gamma-hyperlinked shape from slide masters/layouts (where Gamma stores it) and slides

FAQ

Which MCP clients does this work with? Any client that speaks MCP over stdio or streamable HTTP: Claude Desktop, Claude Code, Cursor, Windsurf, Cline, and others. The stdio variant is the default; the hosted endpoint at https://gammaremover.com/mcp covers clients that cannot spawn local processes.

Do my files get uploaded? With the local stdio server, never — processing happens on your machine. The hosted endpoint receives file content (base64, up to 30MB), processes it in memory only, and stores nothing.

What file formats are supported? PDF and PowerPoint (.pptx) exports from Gamma.app. Legacy .ppt must be converted to .pptx first.

What happens if the watermark cannot be removed? Some exports flatten the badge into the page image. The tool reports may_remain honestly instead of degrading your file with pixel inpainting.

Is this free? Yes — MIT-licensed open source, no account, no quota.

Related Tools

• Web app (browser-based, no upload): gammaremover.com
• CLI + Python library: gamma-watermark-remover
• Local web UI: gamma-watermark-remover-webui
• MCP server for Claude and AI agents: gamma-watermark-remover-mcp
• Agent skill for Claude Code and OpenClaw: gamma-watermark-remover-skill
• Curated Gamma resources: awesome-gamma

Responsible use

Only process files you created or have the right to modify. Keep originals as backup and review cleaned files before sharing. Gamma's official watermark-free route is its paid plan.

License

MIT