Text A
Text B
About this tool
Text Diff is a comparison tool that takes two blocks of text and shows you exactly what changed between them. It highlights added lines, removed lines, and modified content so you can spot differences at a glance without reading word by word. It is useful for writers, developers, editors, and anyone who needs to track changes between two versions of a document, config file, code snippet, or draft.
Reach for this tool when you have two versions of something and need to know what shifted. Common uses include comparing a revised contract to the original, checking whether a copied block of text was altered, reviewing edits made to documentation, or confirming that a pasted snippet matches what you expected.
How to use it
- Paste your original text into the left input box labeled Original.
- Paste your revised or updated text into the right input box labeled Changed.
- Click the Compare button to run the diff analysis.
- Review the highlighted output where green marks additions and red marks removals.
- Scroll through the results to locate every changed, added, or deleted line.
- Copy or note the differences you need, then clear both fields to start a new comparison.
Pro tips
- Trim extra whitespace before comparing to avoid false positives caused by invisible trailing spaces or blank lines.
- For long documents, compare section by section rather than the full text to make results easier to interpret.
FAQ
Does the tool save my text after I compare?
No, nothing is stored or transmitted. The comparison runs entirely in your browser and your text is discarded when you leave the page.
Can it compare code as well as plain text?
Yes, the tool works on any plain text including code, CSV data, or markup. Paste it in as-is and the diff will highlight changes line by line.
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