Compare texts online
Compare two versions of text with clear word-level changes. See additions and removals side by side or inline.
From open to done.
Choose your input
Paste the original text on the left and the updated text on the right.
Make it yours
Compare to calculate word-level additions and removals.
Take it with you
Switch between side-by-side and inline views to inspect changes.
Get a better result.
Green marks added text and red marks removed text; labels also identify changes without relying on color. Whitespace is included in comparison. This is a text comparison, so JSON or source code may be easier to compare after formatting consistently.
Changing The fox is quick to The fox is very quick highlights very as an addition while leaving the shared words unchanged.
Made for your everyday work
Processed entirely on your device
Free to use, with no signup
Copy or download your result
Works in a modern browser
When this helps
Review an edited paragraph, inspect configuration changes, or compare two copied document sections. The output is a readable comparison rather than a version-control patch.
A little more clarity.
What to know before you go.
Does comparison run locally?
Yes. A Web Worker computes differences without sending either text to a server.
What is the difference between views?
Side-by-side separates old and new text; inline interleaves removals and additions in one flow.
Are spaces compared?
Yes. Word-level comparison includes whitespace changes.
Can I cancel a large comparison?
Yes. Cancel stops the worker. The text limit is 5MB combined to protect browser memory.
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