How XFree Works

Privacy-first architecture where all tool processing happens in your browser.

You Load the Page

The tool page loads in your browser along with all necessary JavaScript code.

You Enter Data

Input is typed or pasted directly into the browser interface.

Local Processing

JavaScript processes your data entirely within the browser sandbox.

Instant Results

Output appears immediately without server communication.

Local Mode

Every published tool today runs in Local Mode - there is no server-side or AI processing step to opt into. If that changes for a future tool, the change will be disclosed on that tool's own page before you use it, not buried in a site-wide setting.

✓ All processing in browser JavaScript
✓ Zero data transmission
✓ Works offline after initial load
✓ Complete privacy

Security Notes

Even in Local Mode, we recommend:

Close browser tabs when done processing sensitive data
Clear browser cache periodically
Do not process truly confidential data on shared computers
For highly sensitive data, use an air-gapped device

Try It Yourself

The best way to see local processing in action is to open a tool and watch the network tab stay empty. Start with the JSON Formatter, or read the developer guides for a deeper technical walkthrough of specific tools.