The small jobs, done properly
These are the utilities almost everyone needs a few times a month — generating a password, making a QR code for a poster, converting a recipe from cups to grams, working out a percentage or a VAT figure. They are simple jobs, which is exactly why so many sites pad them out with adverts, sign-up walls and results that are subtly wrong. Here each tool does one thing, shows its working where that helps, and runs entirely on your device.
The password generator uses your browser's cryptographic random number generator to create strong passwords and passphrases, and never stores or sends them. The QR code generator makes static codes for links, Wi-Fi logins and contact cards that never expire, downloadable as PNG or SVG. The unit converter covers length, weight, temperature, cooking measures and more with exact conversion factors, and the color picker converts between HEX, RGB, HSL and OKLCH and checks WCAG contrast.
You will also find a JSON formatter and validator, a Base64 encoder, an age calculator, a BMI calculator with NHS ranges, a percentage calculator, a random number generator with dice and coin flips, and placeholder text. None of them need an account, and none of them send what you type anywhere — for your IP address, speed and DNS, see the network tools.