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Generators and Utilities

Generators for QR codes, barcodes, passwords and test data, plus a few handy utilities. Everything is generated in your browser. Passwords use your browser's cryptographic random number generator.

  • 100% freeNo sign-up needed
  • Private and secureRuns in your browser
  • Instant resultsNothing to install

Codes: QR and barcodes

Make QR codes and barcodes to print or share.

Security: passwords

Generate strong passwords and keys.

Test data for developers

Generate fake but realistic data for testing.

Other utilities

Handy single-purpose helpers.

Questions about generators and utilities

Common questions from people using these tools.

Do the QR codes expire?

No. The codes are static: the data (such as your URL) is encoded directly in the image, with no redirect service in between. They work for as long as the content they point to exists.

Are the test card numbers real?

No. They pass the Luhn checksum that forms use to catch typos, but they are not linked to any account and cannot be used to pay. Use them only to test your own forms.

Are generated passwords stored?

No. Passwords are generated in your browser with crypto.getRandomValues and are never sent anywhere or saved.