Text Diff Checker — Compare two versions

How to Use the Text Diff Checker

Paste your original text in the left box and the modified version in the right box. Click "Compare Texts" to see a line-by-line comparison highlighting what was added, removed, or changed between the two versions.

Lines highlighted in green show additions. Lines highlighted in red show deletions. Unchanged lines appear in gray for context.

Common Use Cases

• Writers and Editors: Track changes between draft versions, compare edits from collaborators, review revision history.
• Developers: Compare code snippets, review configuration file changes, check differences before committing changes.
• Students: Compare essay drafts, track improvements between revisions, verify changes requested by instructors.
• Legal Professionals: Compare contract versions, identify clause modifications, track document revisions.
• Content Managers: Review website copy changes, compare email template versions, track CMS content updates.

Privacy & Security

All text comparison happens locally in your browser using JavaScript. Neither the original nor modified text is uploaded to any server, stored in any database, or transmitted over the network. Your documents remain completely private and secure on your device.