Is this Diff Checker safe for sensitive data & credentials?

Yes, 100%. All processing runs client-side in your local browser memory. No text, tokens, payloads, or logs are ever transmitted to any remote server or analytics engine.

Can I use Diff Checker offline without internet?

Partly. This tool runs on client-side JavaScript with no external API calls, so once it is open it keeps working if your connection drops. Pages are not cached for offline use, so loading a tool needs a connection.

How does URL state sharing work?

When you click the share (link) icon, your input is compressed into a URL hash fragment (#data=...) and the link is copied to your clipboard, without storing anything on a database server.

Diff Checker & Text Compare (Private & Secure)

Compare text and code side-by-side online. Highlights character-level differences and additions.

How to use

Paste original text in left pane and modified text in right pane.
The diff shows side-by-side on wider screens and switches to inline view on narrow screens.
Inspect character-level highlighting.

Technical Considerations

Large files over 10,000 lines.

100% Client-Side Privacy: This tool executes entirely within your browser's runtime environment. No payloads, tokens, or inputs are transmitted to external servers.

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Troubleshooting Recipes & Fixes

Fix "Git merge conflict markers found"
Your build fails or your IDE shows syntax errors because your file contains `<<<<<<< HEAD` and `======`. This happens when a git merge or rebase fails automatically and requires manual intervention.

How to use

Technical Considerations

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Troubleshooting Recipes & Fixes

Fix "Git merge conflict markers found"