Developer text utility
Text Diff Tool
Compare two text versions line by line, review inline changes, ignore whitespace or case, and copy a diff summary.
Use sample text, clear controls, validation-friendly options, and export copy without uploading content.
Validate changes
See additions and removals in one unified view with paired character highlights.
Side-by-side
Compare original and modified text in two columns for review workflows.
Copy diff
Export the diff summary to tickets, review notes, or documentation.
Comparison Workflow
Review edits
Paste old and new versions to review copy changes, config edits, snippets, and generated output.
Reduce noise
Ignore whitespace or case when formatting changes would otherwise hide the important difference.
FAQ
What does a text diff show?
It highlights added lines, removed lines, unchanged lines, and paired inline changes so you can review edits quickly.
Is text comparison private?
Yes. Diff calculation runs locally in your browser, and compared text is not sent to a server.
Can I copy the diff result?
Yes. After comparing, use Copy diff to export a plain-text diff summary.