Diff Checker
Compare two texts or files side by side and highlight the differences.
How to Compare Text and Code Online for Free
1. Paste or upload your original and modified text into the two editors.
2. Pick the language for syntax highlighting (and format JSON/SQL if needed).
3. Click Find difference to see an inline, side-by-side diff.
4. Switch back to edit at any time to tweak either side.
Diffing in Your Browser
Both texts are compared entirely inside your browser using the Monaco diff engine. Nothing you paste or upload is ever sent to a server.