Compare two texts
See exactly what changed between two versions of a text. Your text never leaves your device.
- Your text is never uploaded
- Processed on your device
- Works offline
- Free, no sign-up
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Result updates as you type
The result appears here as soon as you type or open a file.
Settings
Hides long parts that are the same (Lines only).
How it works
Paste both versions
Paste the original on the left and the changed text on the right, or open two files.
See every change
Added text is green and removed text is red and crossed out. Compare by lines, words or single letters.
Save the differences
Copy the result, or download a standard .diff file that code tools can read.
Find what changed between two texts
Use it for contracts, essays, translations, configuration files or code. Lines compares line by line and also marks the changed words inside a line. Words is best for normal writing, and Letters finds single typing mistakes.
Turn on "Ignore extra spaces" when only the layout changed, and "Ignore UPPER and lower case" when capital letters do not matter.
Safe for private documents
Both texts stay in your browser. Nothing is uploaded, so you can compare contracts, personal letters and internal files safely. The texts are gone when you close the page.
Questions
Is my text uploaded?
No. The comparison runs inside your browser. Neither text leaves your device.
Can I compare Word or PDF files?
Copy the text from the document and paste it here. For PDFs, PDF to Text takes the text out first.
What is a .diff file?
A standard text format that lists the changes. Code tools such as Git can read and apply it.
How large can the texts be?
up to 500 MB each. Very long texts with many changes may take a few seconds.
Related tools
More free tools that run on your device. No uploads