Diff Checker
Compare two texts or code snippets and see added and removed lines highlighted — instantly, in your browser.
Processed 100% in your browser — nothing you enter here is ever uploaded.
Common use cases
Compare code versions
See exactly what changed between two snippets, configs or files.
Check edits to an essay
Compare two drafts to see what was added or deleted.
Spot config drift
Diff two settings files to find the lines that differ.
How to use the Diff Checker
Paste the original text or code on the left.
Paste the changed version on the right.
The differences appear instantly below — added lines in green, removed lines in red.
The counts at the top show how many lines were added and removed.