Can Claude resize all photos in a folder?
Not on its own. a chat AI can't run programs or write files on your computer. With the GUI Hub Essentials MCP server installed, Claude (Desktop or Code), Cursor, VS Code and other MCP clients can compress a whole folder of photos locally: the assistant calls the caesium_folder tool, which runs Caesium on your machine. Files are not uploaded.
Set it up (2 minutes)
- Claude Code / Cursor / VS Code / Windsurf: add the MCP server
npx -y https://guihub.cc/mcp.tgz --product=essentials
Claude Code:claude mcp add gui-hub-essentials -- npx -y https://guihub.cc/mcp.tgz --product=essentials - Claude Desktop: download the one-file extension and double-click it.
- No AI? GUI Hub Essentials is also a point-and-click desktop app.
Then ask
“Resize every photo in ~/Pictures/trip to 1920 px.”
What the AI gets
caesium_folder — Compress, resize and/or convert every image in a folder on the user's computer, optionally including subfolders (folder structure is kept). Copies go to outDir; originals are never modified. File dates are kept by default (keepDates).
| Input | Type |
|---|---|
| folder* | string |
| recursive | boolean |
| mode | string (quality, size, lossless) |
| quality | string (92, 80, 65, 50) |
| maxSize | string (2000000, 1000000, 500000, 200000, 100000) |
| resize | string (, 3840, 2560, 1920, 1280, 800) |
| format | string (original, jpeg, webp, png) |
| exif | boolean |
| keepDates | boolean |
| outDir* | string |
Cost
Free to install; each tool has 3 free uses. Then $9 once for all of GUI Hub Essentials (no subscription). The tool tells the assistant when free uses run out and how to unlock.
Powered by Caesium (Apache-2.0), the official release, verified by SHA-256. GUI Hub is independent and not affiliated with Caesium, Anthropic, Cursor or Microsoft.
Other things your AI can do with GUI Hub
- Can Claude compress a video?
- Can Claude convert a video to MP3?
- Can Claude make a GIF from a video?
- Can Claude cut or trim a video?
- Can Claude create a Word (.docx) or PowerPoint (.pptx) file?
- Can Claude convert a Word document to Markdown?
- Can Claude create a PDF file?
- Can Claude merge PDFs?
- Can Claude make a PDF smaller?
- Can Claude add a password to a PDF?
- Can Claude split a PDF into pages?
- Can Claude compress or resize photos?