Text Diff - Online Text Compare Tool

All comparison happens in your browser. Your texts are never sent to our servers.

How to compare two texts and find changes When edits are small but spread across a long document (or code snippet), it’s hard to see what changed. Compare side - by - side in your browser with no installation. Useful for writers, reviewers, and developers. Useful when: • reviewing revisions • comparing configs • checking copy changes When you have two versions of a document or snippet, finding what actually changed can be hard—especially with long text or small edits spread across multiple lines.

Compare two texts and highlight differences instantly. Find changes between versions, code, or documents.

Show detailed guide & explanations

Why you may need this tool

When two versions of a document or configuration look similar, it is easy to miss a small but important change. Whitespace, punctuation, and single - line edits can affect behavior, especially in JSON/YAML and other structured text. A diff view makes changes explicit. It helps you verify what actually changed and prevents accidental omissions during review or publishing.

How to use

Paste the original on one side and the updated version on the other side, then focus on highlighted differences.

  1. Paste the original text in the left panel
  2. Paste the modified text in the right panel
  3. View highlighted differences instantly
  4. Copy or export the comparison result

Examples

Reviewing updates to policy or announcement copy
Policy text often changes in small but meaningful ways. Diffing helps you catch unintended edits and confirm that important terms were not removed or altered.
Finding why a configuration behaves differently after a change
Configuration is sensitive to small changes in keys and values. A diff quickly reveals what changed so you can correlate it with the behavior difference.

Benefits & differentiators

Diffing reduces review time by showing additions, deletions, and modifications clearly. This supports safer edits in policy text, announcements, and technical configuration. It also improves communication: instead of describing changes verbally, you can point to exact differences when collaborating with teammates or stakeholders.

Who this is for

Recommended if you: - review text changes for publishing or compliance - compare configuration before and after deployments - need to explain what changed to another person - want a safer, faster way to spot small edits

FAQ

How does the diff comparison work?
We use advanced algorithms to find the longest common subsequences and highlight additions (green), deletions (red), and modifications between your texts.
Is my text data private?
Yes. All comparison happens locally in your browser. Your texts are never sent to our servers, ensuring complete privacy.
Can I compare code files?
Yes, our tool works great for comparing code. It highlights line - by - line differences and is useful for code review and debugging.
Can I compare large texts?
Yes, we can handle texts up to 1MB each. Very large texts may take a moment to process in your browser.
Does it show line numbers?
Yes, line numbers are displayed to help you quickly locate the differences in your texts.

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