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Free online text diff visualizer for comparing documents. View side-by-side or inline text comparisons with clearly highlighted changes and edits.
Word-level diff using LCS algorithm. All processing is done client-side.
Visual text diff comparison tool with side-by-side and inline modes. Highlights additions in green and deletions in red using an LCS-based diff algorithm. Shows line numbers and provides diff statistics (added, removed, unchanged lines).
Comparing two text files or code snippets visually is essential for code review, documentation updates, and content editing; this tool provides a quick, client-side diff comparison without needing command-line tools.
Developers comparing code changes, technical writers reviewing document edits, QA testers verifying configuration changes, and anyone who needs to visually compare two pieces of text.
Paste the original text in the left textarea
Paste the modified text in the right textarea
Choose between Side by Side or Inline view mode
Green highlighted lines show additions, red shows deletions
Use the Copy Diff button to copy the unified diff output
Review the stats bar for a quick count of changes
Compare two versions of a README.md file to see documentation changesDiff a JSON configuration before and after adding new environment variablesCompare two SQL queries to find the differences in logicThe tool uses a Longest Common Subsequence (LCS) based algorithm to compute the minimum number of additions and deletions.
The tool works best with text under a few hundred lines. Very large files may slow down the browser.
No, this tool is designed for text comparison only.
It copies a unified diff format with + for additions, - for deletions, and space for unchanged lines.
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