Text Compare
See what changed between two texts, line by line and word by word.
About this tool
Spot Every Change Between Two Texts
Put the old and the new version side by side and see added, removed and changed lines, with the changed words highlighted inside each line.
How to use it
- Paste the original on the left and the new version on the right.
- Read the highlighted differences line by line.
- Copy the result as a patch if you need to share it.
Frequently asked questions
Is my data sent anywhere?
No. Every tool runs in your browser. Tokens, passwords and files are processed on your device and never uploaded.
Can I link to a tool?
Yes. Each tool has its own address, for example toolula.com/dev/regex-tester, and you can star tools to keep them at the top of the list.
Does the JWT decoder check the signature?
No. It decodes the header and payload and shows their dates; checking the signature needs the secret or public key.
Are the generated passwords and UUIDs random enough?
Yes. They come from the browser's cryptographic random generator (crypto.getRandomValues / randomUUID), the same source used for keys.