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Local image tools: circle crop, crop, resize, compress, convert JPG/PNG/WebP/AVIF. By RoundCut.
About
Local image tools: circle crop, crop, resize, compress, convert JPG/PNG/WebP/AVIF. By RoundCut.
Security Report
Valid MCP server (1 strong, 1 medium validity signals). No known CVEs in dependencies. Package registry verified. Imported from the Official MCP Registry.
5 files analyzed · 1 issue found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Required
This plugin requests these system permissions. Most are normal for its category.
How to Install
Add this to your MCP configuration file:
{
"mcpServers": {
"io-github-araluma-roundcut-mcp": {
"args": [
"-y",
"roundcut-mcp"
],
"command": "npx"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
roundcut-mcp
Local image tools for AI agents, as an MCP server. Circle crop, crop, resize, compress and convert JPG, PNG, WebP and AVIF on your own machine with sharp. No network calls, no accounts, no upload: the files never leave the disk.
Made by RoundCut, the free image tools site (29 languages).
Install
Node 20 or newer.
npx roundcut-mcp
Claude Desktop / Claude Code
{
"mcpServers": {
"roundcut": { "command": "npx", "args": ["-y", "roundcut-mcp"] }
}
}
Claude Code: claude mcp add roundcut -- npx -y roundcut-mcp
Cursor, Windsurf, VS Code
Same shape: a stdio server, command npx, args -y roundcut-mcp.
Tools
| Tool | What it does |
|---|---|
image_info | Format, dimensions, alpha, EXIF orientation. |
circle_crop | Round profile picture: centered square plus a circular transparent mask. size, format (png default), background for jpeg. |
crop_image | Pixel box (left, top, width, height) or a centered aspect such as 1:1, 4:5, 16:9. |
resize_image | By width, height or percent. Keeps the aspect ratio, never enlarges unless enlarge: true. Lanczos3. |
compress_image | Smaller file, same format. quality for jpg/webp/avif (mozjpeg for jpg), lossless recompression for png. |
convert_image | To jpeg, png, webp or avif. Input may also be GIF, TIFF or HEIC. Transparency kept, or flattened onto background for jpeg. |
roundcut_web_tools | Links to the browser tools this server does not run locally: background remover, AI upscaler, batch convert, JPG to PDF. |
Every tool takes an input path and writes next to it by default
(photo.jpg becomes photo-circle.png, photo-resized.jpg, photo.webp), or to output.
Results carry a text summary, a resource_link to the file, structured JSON
(output, format, width, height, bytes, inputBytes) and a small JPEG preview
(preview: false to skip it).
Example, from a chat client with the server attached:
Make
~/Pictures/me.jpga 512 px round avatar as WebP.
calls circle_crop with { "input": "~/Pictures/me.jpg", "size": 512, "format": "webp" }
and answers with the file path, the dimensions and the byte count.
Limits
- Inputs above 80 megapixels are refused, so a stray call cannot allocate gigabytes.
- EXIF orientation is applied on read; the output is upright and carries no EXIF.
- jpeg has no alpha: transparent areas are flattened onto
background(white by default).
Develop
npm install
npm test # builds, then node --test
src/engine.ts is the pure image layer (tested directly). src/index.ts adapts it to MCP tools.
License
MIT. Copyright Araluma.
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