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HomeConverterJSONJWTAbout
UltraTools LogoUltraTools
HomeConverterJSONJWTAbout

Diff Anything.Secure & Local.

Compare text, JSON, code, or images side-by-side. 100% Local & No Uploads .

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Frequently Asked Questions

Everything you need to know about the tool.

What files can I compare?

You can compare any text-based files including code (JS, Python, JSON), documents (Markdown, TXT), and configuration files.

Is my code safe?

Yes. Diffing happens 100% in your browser. We never see, store, or upload your code to any server.

Private & Secure

Processing happens 100% in your browser. Files are never uploaded to any server.

Blazing Fast

Powered by WebAssembly for near-native performance. No waiting for uploads.

No Install

Works on any device (Windows, Mac, Chromebook, Mobile) directly in Chrome/Edge/Firefox.

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Powered by UltraTools Core, WebAssembly & WebGPU

100% Client-Side Processing • No Data Leaves Your Device