Diff Checker
Compare two blocks of text side by side with color-coded additions, deletions, and changes.
Result
Copied!
Paste two texts and click Compare.
How It Works
Paste the original text in the left panel and the modified text in the right panel, then click Compare. The tool performs a line-by-line diff, highlights added lines in green and removed lines in red, and shows a summary of how many lines changed. Everything runs in the browser with no data upload.
Use Cases
- Reviewing changes to a config file before deploying
- Comparing two versions of a document to find editorial differences
- Checking that a generated file matches a reference output
- Spotting whitespace or encoding differences invisible to the naked eye