Text Diff Checker
Compare two texts side-by-side with line and word diff. Save comparisons to revisit later.
Compare two pieces of text side-by-side with line and word-level diffing, gutter line numbers, and ignore-whitespace and ignore-case toggles. Sign in to save diffs for revisiting later.
When to use it
- 1Comparing two versions of a paragraph or document.
- 2Spotting changes between two configs without committing them yet.
- 3Saving a diff to share later or revisit after more edits.
How it works
- 1
Paste two texts
Original on the left, changed on the right. Auto-compare runs after you stop typing.
- 2
Read the diff
Red lines were removed, green were added, gray are unchanged. Toggle word-diff for fine-grained edits within lines.
- 3
Save it
Sign in to save diffs to your library. Revisit them by name later.
Frequently asked
Does it handle very long documents?
Yes - the diff is computed in your browser and scales to thousands of lines, though the rendering may slow down past 10k lines.
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