Text Diff Checker
Compare two texts side-by-side and highlight the differences between them.
Comparison Options
The Text Diff Checker helps you compare two texts and visualize the differences between them.
- Multiple Diff Modes: Compare by lines, words, or characters
- Flexible Options: Ignore whitespace or case differences
- Two View Modes: Split view for side-by-side comparison or unified view
- Color-Coded: Green for additions, red for deletions
- Statistics: See counts of additions, deletions, and unchanged lines
- Offline Capable: All processing happens in your browser
About Text Diff Checker
When two versions of a document, a code snippet, or a config block look almost identical, the change that matters is easy to miss by eye. A text diff checker lines the two versions up and highlights exactly what was added, removed, or changed, so you can review an edit with confidence instead of squinting at two windows.
Paste the original on one side and the revised text on the other, and the tool marks the differences inline. It's useful for reviewing copy edits, spotting an accidental change in a configuration file, comparing two log outputs, or confirming what a paste actually changed before you commit to it.
The comparison happens entirely in your browser. Neither block of text is uploaded or stored, so you can safely diff private documents, contracts, or unreleased code.
How to use Text Diff Checker
Paste the original text
Put the first or baseline version into the left input.
Paste the revised text
Put the second or updated version into the right input.
Review the highlights
The tool marks additions, deletions, and changes between the two versions so you can see exactly what differs.
Refine and re-compare
Edit either side and the comparison updates, letting you iterate until the difference is what you expect.
Frequently asked questions
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