DeveloperLocal processing
Text Diff
Highlight additions and deletions
Original
Compare
About This Tool
Text Diff is a free online tool. Compare two texts line by line All processing runs locally in your browser — files are never uploaded to any server, keeping your data private.
Use Cases
- Format JSON, YAML, TOML, SQL, and XML for API debugging
- Encoding, hashing, JWT decode, AES crypto, and security tasks
- Regex, JSONPath, IP, Cron, and other developer utilities
- Run locally — configs and secrets never leave your device
How to Use
- Step 1
Paste original text
- Step 2
Paste comparison text
- Step 3
View highlighted diff
- Step 4
Analyze changed lines
Frequently Asked Questions
- Is Text Diff free?
- Yes, completely free with no registration required and no usage limits.
- Are my files uploaded to a server?
- No. Text Diff processes everything locally in your browser. Your data never leaves your device or gets uploaded to any server.
- Which browsers are supported?
- Chrome, Firefox, Safari, Edge, and other modern browsers. We recommend using the latest version for the best experience.
- How do I use Text Diff?
- 1. Paste original text 2. Paste comparison text 3. View highlighted diff 4. Analyze changed lines