Format JSON, diff data, minify CSS, beautify code and build regex patterns — free developer tools in your browser.
Everything a student needs to stay on top of grades, deadlines and study time — free online calculators that run right in your browser with no registration.
Run your freelance business like a pro: generate professional invoices, price your time correctly, and understand taxes and fees — all with free tools.
A growing toolbox for developers: format, validate and convert code, build regex patterns, generate UUIDs and commit messages — fast, private and free.
Understand your body and plan your fitness journey with accurate, free calculators for BMI, daily calories, TDEE, body fat and hydration.
Yes. The JSON diff tool highlights changes between two JSON structures side by side.
The CSS minifier and JavaScript minifier remove whitespace and comments to shrink file size.
Yes. The box shadow, filter and animation curve generators output ready-to-use CSS code.
Yes. Everything runs in your browser — your code never leaves your device.