Text Diff Checker
Compare two text blocks line by line.
How to compare two texts
Paste your original text on one side and the changed version on the other, and the diff checker highlights every addition and deletion line by line. It's the fastest way to spot what changed between two versions of an article, contract, config file or code snippet without reading both top to bottom.
When a diff checker helps
Use it to review edits from a colleague, confirm what a copy-and-paste changed, audit two versions of terms or settings, or check a translation against its source. Seeing differences clearly marked saves time and prevents missed changes. The comparison runs entirely in your browser, so your text is never uploaded.
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Frequently Asked Questions
How does the text diff work?
It compares two text blocks line by line and marks changed lines with - and + prefixes.
What can I use a text diff for?
Comparing document drafts, code snippets, configuration files, or any two versions of text to spot added, removed, and changed lines.
Is it private?
Yes. The comparison runs locally in your browser and neither text block is uploaded.
Is the text diff checker free?
Yes. It is completely free with no sign-up and compares text instantly in your browser.