Text Diff Checker

Compare two pieces of text and highlight differences.

Original
Changed
Diff

  

Related Inspect / Preview / Debug tools

About the Text Diff Checker

What does the Text Diff Checker do?
Compare two pieces of text and highlight differences. GeekTool runs the Text Diff Checker entirely in your browser — input never leaves your device.
Is the Text Diff Checker free?
Yes. The Text Diff Checker is part of GeekTool, a free suite of 50+ developer utilities. No sign-up, no ads inside the tool, no quotas.
Does the Text Diff Checker send my data to a server?
No. All processing is client-side JavaScript. Your input stays in your browser tab — we never see it.