3 tools Generators
Passwords, QR codes and random numbers from local entropy.
Your files stay on your device. The tool works directly in your browser, using your device to process your files. Nothing is sent to our servers, and we never receive, store, or see your files or figures.
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Password generator
Generate strong random passwords using your browser's cryptographic randomness, with entropy shown in bits and no password ever transmitted.
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Random number generator
Generate random numbers in any range using cryptographic randomness, with options for no repeats and sorted output, for draws, sampling and testing.
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QR code generator
Create QR codes for links, Wi-Fi networks, email, phone and SMS. Download as PNG or SVG, with no watermark, no account and no expiry.
Randomness that comes from your own machine
Every generator here draws on the cryptographically secure random number source built into your browser and seeded by your operating system. The ordinary, everyday random function that most sites reach for is deliberately never used. It is fast, it is predictable from a handful of observed outputs, and it has no place anywhere near a password.
Why generating locally matters
A password generated on a server has, by definition, been seen by that server. So has a Wi-Fi password encoded into a QR code by a remote service. These tools generate in your browser, and you can verify it: open your browser’s network panel and watch that nothing fires when you press regenerate.
Unbiased by construction
Squeezing a random number into a range has an obvious wrong answer, one that quietly leaves some outcomes more likely than others whenever the range does not divide evenly. Both the password generator and the random number generator avoid it, so every outcome is exactly equally likely.
QR codes that never expire
The QR code generator produces static codes that encode your data directly in the pattern. There is no redirect service in the middle that could shut down, start charging or begin counting scans. Download as PNG for screens or SVG for print, with no watermark and no account.
