Text Diff Checker
Compare two texts side-by-side with word-level and line-level difference highlighting—perfect for code reviews and document editing.
Our Text Diff Checker is a powerful free tool for comparing two texts with word-level and line-level difference highlighting. Perfect for code reviews, document version comparison, and content editing—see exactly what changed with color-coded additions and removals.
Frequently Asked Questions
What is a text diff checker?
A text diff checker compares two versions of text and highlights the differences between them. It shows what was added (green), removed (red), or unchanged, making it easy to spot changes in documents, code, or content revisions.
What's the difference between word-level and line-level comparison?
Word-level comparison highlights individual word changes within lines, perfect for prose and content editing. Line-level comparison shows entire lines that changed, better for code reviews and structured documents where line-by-line changes matter.
Can I use this for code comparison?
Yes! The text diff checker works great for comparing code snippets, configuration files, or scripts. Use line-level mode for code to see which lines changed. It's similar to git diff but works directly in your browser without version control.
How do I interpret the results?
Green highlighting indicates text that was added in the modified version. Red highlighting with strikethrough shows text that was removed from the original. Unhighlighted text remained unchanged between both versions.
Is my text data secure?
Yes, all comparisons happen entirely in your browser using JavaScript. Your text is never sent to our servers or stored anywhere. This ensures complete privacy for sensitive documents or proprietary code.
Can I export the comparison results?
Yes! Click the 'Copy Diff' button to copy the comparison in diff format (with + for additions and - for removals). You can paste this into documentation, emails, or version control commit messages.