Text Diff Checker

Compare two texts and show the added, removed, and changed lines.

🔒 Client · Offline

Processed locally

This tool runs in the browser. Large texts use a web worker.

Ignore whitespace

Ignore trailing whitespace

Ignore case

Ignore blank lines

Ignore line endings

Original

Modified

About text diff

This tool compares two texts line by line and shows inserts and deletes.

Paste original text on the left and modified text on the right. Select Compare to create the result.

The tool uses an optimized Myers diff. It skips shared start and end lines so long similar texts stay fast.