Programming
Cron Generator
Build crontab schedules visually instead of recalling the field syntax.
Programming
JWT Generator
Mint signed JSON Web Tokens for testing authentication flows.
Tool Panel
Processed locallyAbout JWT Generator
Signs JWTs with the browser WebCrypto API (HS256 / HS512); the secret never leaves your machine.
- 1
Signs with HS256, HS384 or HS512 using the browser WebCrypto API.
- 2
The secret is used locally for signing and never sent to a server.
- 3
Copy the finished token straight into a local debugging flow.
- 1
Fill in the payload
Put the claims you want in the token into the input area as JSON.
- 2
Pick algorithm and secret
Match whatever the service under test expects and paste the shared secret.
- 3
Generate and copy
The three-part token is ready to hand to the service you are testing.
HS is symmetric: one shared secret and you are done, which fits local debugging. RS and ES need a key pair and a heavier flow, so they are not included.
No. It lives in this page memory for signing and is gone when you reload.
Related tools
View allProgramming
Gitignore Generator
Produce a .gitignore suited to your stack instead of copying one from memory.
Programming
Programming
UUID Generator
Generate random v4 UUIDs in bulk for fixtures and test data.
Programming
Programming
NanoID Generator
Generate compact, URL-safe random identifiers.
Programming
Programming
ULID Generator
Generate sortable unique IDs that preserve creation order.
Programming
Programming
Regex Tester
Test and debug regular expressions with live match highlighting.
Programming
Programming
Hash Generator
Compute MD5, SHA-1, SHA-256 and SHA-512 digests of any text.
Programming
Programming
Robots.txt Generator
Build a robots.txt that tells crawlers what to index and what to skip.
Programming