Text Diff
Compare two blocks of text.
FreeNo registrationFast🔒 Runs in your browser
Original
Changed
The quick brown fox
−jumps over
+leaps over
the lazy dog
+and runs away
Added
2
Removed
1
Lines
5
3 matches
Privacy-first. Your data is processed locally in your browser and is never uploaded to our servers.
AI, on top of the deterministic tool
Explain, fix or convert this with AI
What is a Text Diff?
A text diff aligns two versions line by line and marks what was added, removed or left alone. It is the fastest way to see what actually changed between two drafts, configs or log excerpts.
How to use the Text Diff
- Paste your data into the input panel, or load the sample.
- The result appears immediately — adjust the options if the tool offers any.
- Copy the output, or download it as a file.
Text Diff features
Line-by-line diff
Added and removed
Case-insensitive mode
Difference statistics
Frequently asked questions
Is the Text Diff free?
Yes. The Text Diff is completely free, with no sign-up and no usage limits.
Is my data uploaded to a server?
No. Everything runs locally in your browser — your data never leaves your machine.
Does it work on mobile?
Yes. The Text Diff works in any modern browser on desktop, tablet and phone.
Can I use it offline?
Once the page has loaded, the Text Diff keeps working without a connection, because the processing happens in your browser.