ScanSpotText Diff
Compare two texts line by line.
Changes highlightedGreat for code & draftsSide-by-side view
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↔️ Text Diff
Compare two texts and highlight the differences line by line.
Original
Modified
Compare two blocks of text side by side and see exactly which lines were added, removed or changed. Nothing is uploaded, so you can diff private drafts.
How to use the Text Diff
- Paste the original text into the left pane and the revised text into the right.
- Added lines are highlighted in one colour and removed lines in another, with the line numbers aligned.
- Copy the comparison, or switch on the option that ignores whitespace-only changes.
Why people use it
- Much faster than reading two documents side by side when all you need is what changed.
- Useful for reviewing a contract revision, comparing configuration files, or checking edits in a translation.
- Runs locally, so unpublished drafts and internal documents stay private.
Frequently asked questions
Does it compare word by word or line by line?
Line by line, which matches how developers read code diffs and how editors track document changes. A single changed word marks the whole line.
Can I ignore whitespace changes?
Yes. Enabling the whitespace option treats a line that only gained or lost spaces as unchanged, which removes noise from reformatted text.
Is there a size limit?
The comparison runs in your browser, so very large texts are limited by memory rather than a server quota.