Text Diff Checker
Compare two texts and see exactly which lines differ. Perfect for code, configs, essays and version checks, all in your browser.
About this tool
Paste two versions of any text — code, configuration, an essay or a contract — and this checker highlights exactly which lines differ, side by side.
Handy before accepting a pull request, after an editor rewrites your manuscript, or when comparing generated output. Results are instant and private: nothing leaves your browser.
FAQ
How does the diff work?
The tool compares texts line by line and highlights every line that changed, is missing, or was added, in a side-by-side table.
Is it a semantic diff?
It compares raw lines, not parsed structures. For code, formatting-only changes show as differences.
Is my text uploaded?
No. Everything happens locally in your browser; the texts never leave the page.