CompareDiff
Free browser-based text, code, JSON and document diff checker.
Free - Completely free to use; runs locally in the browser (no server upload).
About CompareDiff
A free, privacy-first diff tool that runs locally in your browser to compare text, code, JSON and documents. Features side-by-side or stacked views, line/word/character granularity, syntax-aware formatting for JSON/JS/TS/HTML/CSS/Markdown/YAML/XML, ignore options (spaces/blanks/case), folding/wrapping, fullscreen focus, and a navigable diff report — all without uploading your data to a server.
Key Features
- Runs fully in-browser — no upload, local processing for privacy
- Side-by-side or stacked diff views with line/word/character granularity
- Syntax-aware formatting and highlighting for JSON, JS, TS, HTML, CSS, Markdown, YAML, XML
- Diff controls: ignore spaces/blanks/case, folding, wrap, and fullscreen focus
- Navigable diff report with previous/next and left-to-right / right-to-left view options
Who is this for?
Developers, QA engineers, writers and content editors who need quick, private text/code comparisons.
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FreeCompletely free to use; runs locally in the browser (no server upload).
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