Developer & Text ToolsFree100% Client-Side

Diff Checker

Compare two blocks of text and instantly see line-by-line additions, deletions, and unchanged content.

100% privateRuns instantly in-browserUpdated regularly

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100% Secure & Private

Your files never leave your computer — processed in-browser with WebAssembly.

Lightning Fast

No queues, no uploads — results in milliseconds, even on mobile.

Modern & Ad-Light

Clean interface, dark mode, and no popups — built to beat legacy tools.

What you get

Does this diff checker upload my text anywhere?

Can I ignore case or whitespace differences?

What algorithm does the diff checker use?

Generate and verify Bcrypt hashes with custom salt rounds entirely in your browser.

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes in bulk from text or files.

Minify JavaScript, CSS, HTML, or JSON by stripping comments and unnecessary whitespace.

Decode JSON Web Tokens (JWT) locally in your browser. Inspect headers, payload, and signatures.