42 instruments.One field of light.
A bright, browser-native workspace where developer tools, calculators, converters and text utilities bloom out of one living field of light. No sign-up. Nothing leaves your browser.
The command deck
Four panels. Every instrument in reach.
Float through each category and tap straight into a tool — or open the full collection.
Developer
15 tools
Format, encode, decode, hash and debug — the daily driver kit.
View all developer toolsCalculators
10 tools
Money, health and time — answers with the formula behind them.
View all calculators toolsBright spots
The tools people keep coming back to.
- Developer Tools
JSON Formatter
Format, validate, and beautify JSON data instantly. Supports minification, syntax highlighting, and error detection for malformed JSON.
Open tool - Developer Tools
Password Generator
Generate strong, random passwords and memorable passphrases with a live entropy-based strength meter. Powered by your browser’s secure crypto API.
Open tool - Converters
Color Picker
Pick colors visually and get HEX, RGB, HSL values. Generate color palettes, shades, and complementary colors for web design.
Open tool - Developer Tools
Regex Tester
Test and debug regular expressions in real time. Visualize matches, groups, and flags with instant feedback and pattern explanation.
Open tool - Calculators
Mortgage Calculator
Calculate monthly mortgage payments, total interest paid, and amortization schedule. Input loan amount, interest rate, and term.
Open tool - Text Tools
Word Counter
Count words, characters, sentences, and paragraphs in your text. Track reading time and get detailed text statistics instantly.
Open tool - Developer Tools
JWT Decoder
Decode and inspect JSON Web Tokens (JWT) online. View header, payload, and signature without a secret key. Debug JWT authentication issues.
Open tool - Developer Tools
CSS Gradient Generator
Visually build linear, radial, and conic CSS gradients with draggable color stops and copy-ready CSS code.
Open tool
Step into the light
42 instruments. One field of light.
Free, instant, and entirely in your browser. Pick an instrument and start.