Generators

Work out percentages: X% of Y, what percent one number is of another, and percentage change.

Convert colors between HEX, RGB and HSL and preview the result.

Check the contrast ratio between two colors against WCAG AA and AAA standards.

Create QR codes for URLs, text, Wi-Fi and contacts in your browser and download as PNG.

Generate Code128, EAN and UPC barcodes locally and download as an image.

Generate strong, random passwords with custom length and character sets — in your browser.

Create memorable, secure passphrases from random words.

Generate random numbers in a range, with optional uniqueness, using secure randomness.

Design CSS gradients visually and copy the code.