Text / Document Difference
Compare two blocks of text or documents and highlight the differences.
This Text/Document Difference tool compares two blocks of text and highlights exactly what changed, down to the word or character, in either a side-by-side split view or a single unified view. Toggle whitespace visibility to catch invisible formatting changes. Comparison runs entirely in your browser — neither document is ever uploaded.
How to use
- 1Paste the original text on the left and the changed text on the right.
- 2Click Compare to see the differences, highlighted down to the word or character.
- 3Switch between Split and Unified layouts, and toggle whitespace visibility as needed.
Frequently asked questions
What is a diff checker?
A diff checker compares two versions of text and highlights exactly what was added, removed, or changed between them — the same underlying idea as a code diff, applied to any block of text or a document.
What can I use this for?
Reviewing edits to a contract or article, spotting what changed between two versions of a config file, or checking whether two blocks of text that look identical actually match exactly.
What's the difference between Split and Unified view?
Split view shows both versions side by side with changes highlighted in each; Unified view shows a single combined stream with additions and removals marked inline — pick whichever is easier to scan for your case.
Is my text sent to a server?
No. Comparison happens entirely in your browser — neither document ever leaves your device.