Developer Tools

A set of everyday utilities for writing, debugging and shipping code faster. Format and validate JSON, test regular expressions against real input, convert between encodings, generate hashes and UUIDs, or produce ready-to-paste CSS. Each tool runs entirely in your browser: your code and data are never uploaded to any server.

Showing all 15 tools

JSON Formatter & Validator Beautify, minify and validate JSON instantly in your browser.

Regex Tester Test regular expressions live with flags, match highlighting and capture groups.

Base64 Encoder & Decoder Encode text to Base64 or decode Base64 back to text, with full Unicode support.

URL Encoder & Decoder Encode or decode URLs and query strings, component by component or whole links.

UUID Generator Generate one or many random UUIDs (v4) with cryptographically secure randomness.

Hash Generator (SHA-256 & more) Compute SHA-256, SHA-384, SHA-512 and SHA-1 digests of any text, locally.

Unix Timestamp Converter Convert Unix timestamps to human dates and back, in your local time zone or UTC.

Regex Generator Build regular expressions from examples, with ready-made patterns for common cases.

CSS Minifier & Beautifier Minify CSS to shrink stylesheets, or beautify minified code back into readable form.

JavaScript Minifier & Formatter Minify or beautify JavaScript with a real parser, in a sandboxed web worker.

Color Converter (HEX, RGB, HSL) Convert colors between HEX, RGB, HSL and named CSS colors, with live preview.

CSS Gradient Generator Design linear and radial gradients visually and copy production-ready CSS.

Box Shadow & Text Shadow Generator Compose box-shadow and text-shadow CSS with sliders and instant preview.

Embeddable Widget Code Generator Generate self-contained, documented HTML/CSS/JS snippets ready to embed in any site.

JSON ↔ YAML Converter Convert JSON to YAML and back with a proper parser on both sides.

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