Text & Writing
Text Diff Checker
Text Diff Checker compares two versions of a text and highlights exactly which lines were added, removed, or changed between them. Paste your original and revised text side by side and get a clear, color-coded breakdown instead of scanning both versions manually for differences.
It's useful for writers comparing draft revisions, developers checking config or code changes, and anyone reviewing edited documents. The comparison runs instantly using JavaScript in your browser, so neither version of your text is ever uploaded to a server.
How to Use the Text Diff Checker
- Open the Text Diff Checker tool.
- Paste your original text into the first box.
- Paste the revised text into the second box.
- Review the highlighted line-by-line differences.
Frequently Asked Questions
What does the highlighting mean?
Added lines, removed lines, and changed lines are each marked differently so you can spot exactly what was edited at a glance.
Can it compare large documents?
Yes, it handles multi-paragraph text comfortably, though very large files may take a moment longer to render.
Are my two text versions kept private?
Yes, the comparison happens entirely in your browser, so neither version is ever sent to or stored on a server.