Generators, by job
Security
The password generator builds random passwords from the character sets you choose. Length matters more than symbols: each extra random character multiplies the number of possible passwords by the size of the character set. Password strength checker estimates how guessable an existing password is.
QR codes and barcodes
Use the QR code generator for URLs and text, Wi-Fi QR to let guests join a network without typing the password, and vCard QR for contact details. Higher error correction keeps a code scannable when it's partly covered or printed small, at the cost of a denser pattern. The barcode generator handles linear formats for labels and stock.
Design and CSS
Contrast checker tests text and background colours against the WCAG 2 thresholds: 4.5:1 for body text at level AA. The palette generator gives you hex codes, and the gradient, box-shadow, border-radius and glassmorphism generators output CSS you can paste straight into a stylesheet. Favicon generator produces the icon sizes browsers and phones request.
Chance and time
Random number, dice, coin flip and random picker (for giveaways) cover quick random decisions. The timezone converter, countdown and Pomodoro timer cover scheduling. The invoice generator builds a printable invoice. How to make a professional invoice explains which fields are expected.