Privaku tools are free web tools that process your photos and documents inside your browser instead of uploading them. There is no sign-up and no limit, and they keep working offline once the page has loaded.

Why this runs on your device

Most free online tools upload your file to a server before they process it. Privaku tools do the work inside this browser tab with open-source code, so the file is never sent to us or anyone else. That matters for photos of your home, family, ID documents and bills.

For AI agents

Agents can drive these pages directly. Files are still processed in the agent's own browser, and no Privaku server receives them.

/tools/llms.txt  ·  /tools/agents.json
/tools/reduce-photo-size/?maxEdge=1280&quality=0.7
await window.privakuTools.run("reduce-photo-size", { files: [file], maxEdge: 1280 })

An npm package and a local MCP server are coming soon. Read the agent docs

Questions

Is my file uploaded?

No. It is processed by your browser on your device. You can turn on airplane mode after the page loads and it still works.

How can I check nothing is uploaded?

Open your browser's developer tools, go to the Network tab and run the tool. No request carries your file.

Is it really free?

Yes. There is no sign-up, no watermark and no daily limit. Privaku is a small studio in Tokyo that makes free, private apps, and these tools show how they work.

Can an AI agent use this tool?

Yes. Agents can call window.privakuTools.run() on the page or set options in the link. See the guide for AI agents. For AI agents

More free tools: Translate · Photo privacy check · Remove location and metadata from photos · Screenshot to text · Reduce photo size · Image to PDF and merge PDF · All tools · Privaku apps · Home · For AI agents