Diff checker
Paste two versions of a text and see every line, word or character that changed.
Comparing the first 200,000 characters of each side to keep this fast.
Runs in your browser. Nothing you type is sent anywhere.
- Line, word or character mode
- Side by side or inline view
- Nothing uploaded
How to compare two texts
- Paste the original text on the left and the changed text on the right.
- Pick line, word or character mode, and side by side or inline view.
- Review the highlighted additions and removals and the change counts.
Diff checker FAQ
What is the difference between line and word mode?
Line mode marks whole lines as added or removed, which is best for code and lists. Word mode marks only the words that changed inside a line, which is easier to read for prose.
How big a text can I compare?
There is no hard limit, but comparisons over 200,000 characters per side are trimmed to that amount to keep the page responsive.
Is this the same as a Git diff?
It compares raw text the same way, but it does not read files, folders or Git history. Paste the two versions you want to compare.
Are my documents uploaded anywhere?
No. Both text boxes are compared in your browser and nothing is sent to a server.
Can I compare two files?
Open each file in a text editor, copy its contents and paste one version into each box here.