Happy Tools

File Tools

Convert images, documents, and PDFs in your browser

Resize dimensions and adjust image quality

Pick and convert between HEX, RGB, HSL, OKLCH, and CMYK

Generate harmonious palettes from any base color

Check WCAG contrast ratios for accessibility

Build CSS gradients with a visual editor

Simulate color vision deficiencies on colors and images

Meters, feet, inches, miles, kilometers

Kilograms, pounds, ounces, grams

Celsius, Fahrenheit, Kelvin

Liters, gallons, cups, milliliters

Seconds, minutes, hours, days, weeks, years

Pinches, teaspoons, tablespoons, cups, grams