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Text Diff Checker — Compare Text Online

Compare two texts online with highlighted differences. Free text diff checker with ignore-case/whitespace options, runs client-side.

No uploads. Everything runs locally in your browser.

Text diff checker

Compare two texts and highlight differences inline. Choose to ignore case or whitespace, swap texts, load a sample, and copy a quick summary.

Runs client-side for privacy. Informational tool, not for legal review.

Original text
Modified text
Result

Paste text and compare to see highlighted differences.

What is this tool

This text diff checker compares two versions, highlights additions and removals, and provides a quick summary. You can ignore case or whitespace before diffing to focus on meaningful changes.

Use cases

  • Review edits before publishing articles or docs.
  • Compare requirements, briefs, or contract clauses safely.
  • Spot typos or accidental changes without manual scanning.

Privacy: everything runs in your browser.

Popular ways to use this tool

How to use Text Diff Checker

  1. Paste original text on the left and modified text on the right.
  2. Toggle ignore case/whitespace if needed, then click Compare.
  3. Review highlighted adds/removals and copy the summary if needed.

Key features of Text Diff Checker

  • Inline diff highlighting for added/removed text
  • Options to ignore case and collapse whitespace
  • Swap, clear, and sample texts for quick testing
  • Client-side processing for privacy

Text Diff Checker — key benefits

  • Completely free with no signup or registration required.
  • Runs entirely in your browser — your data is never uploaded.
  • Works on desktop, tablet, and mobile devices.
  • Instant results with no waiting or processing queues.
  • Part of the ToolCircuit suite of free online text tools tools.

FAQ

Is this free?

Yes. It runs in your browser with no uploads.

Do you store my text?

No. Everything stays client-side.

Can I ignore case?

Yes. Enable ignore case before comparing.

Can I ignore whitespace differences?

Yes. Enable ignore whitespace to collapse spacing before diffing.

Can I swap texts?

Yes. Use the Swap button.

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