Compare two blocks of text line by line and see what changed. Free, runs entirely in your browser — your files are never uploaded.
How to use Text Diff
Paste the original text on one side and the changed version on the other.
Read the line-by-line comparison, with additions and removals marked.
Use the line numbers to find each change in your editor.
Frequently asked questions
Is the text I paste sent anywhere?
No. The comparison runs in your browser, so contracts, config files and logs can be diffed without handing them to a third party.
Why do some diff tools mark my last line as changed when it is not?
Because a missing newline at the end of a file is commonly treated as a modification to the final line, which reports it as both removed and added. Lines are compared as lines here, so a trailing newline difference does not produce a phantom change.
Is whitespace taken into account?
Yes. Indentation and trailing spaces are real differences and are shown, since they are often exactly what you are hunting for.
How large a document can I compare?
Large ones are fine. The work happens locally, so the limit is your device rather than an upload size cap.