Generators
22 tools
Generators for the things you would otherwise hand-write or hunt down: strong passwords and passphrases, QR codes and barcodes, UUIDs, CSS gradients and box shadows, colour schemes, lorem ipsum, random numbers, usernames, slugs and valid-format test data like fake credit card numbers. Everything is generated in your browser, so a password or key is created on your own device and never sent anywhere.
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Frequently asked questions
Are the passwords and keys I generate sent anywhere?
No. Generation happens in your browser using its built-in cryptographic random source, so a password, passphrase or key exists only on your device unless you save or paste it somewhere yourself. Nothing is logged or transmitted — you can generate one offline to confirm.
Can the fake credit card numbers be used to actually pay for something?
No. The generated numbers pass the Luhn check-digit test, so they have a valid format, but they are not issued by any bank and are linked to no account or funds. They exist to test payment forms, validation logic and checkout flows — using them to attempt a real purchase would simply be declined.
What can I put in a QR code, and is there a length limit?
A QR code can hold a URL, plain text, contact details, Wi-Fi credentials and more. There is a limit — a QR code stores up to a few thousand characters — but the practical ceiling is lower: the more data you pack in, the denser the code and the harder it is for a camera to read, so short URLs and text scan most reliably.