Developer Tools

Developer tools that work where you work — directly in the browser, with zero server round-trips. Our Code Formatter beautifies JavaScript, HTML, CSS, and JSON with configurable indentation and syntax highlighting powered by Prism.js. Paste in minified or messy code and get clean, readable output instantly. Because all processing happens client-side, your code never leaves your machine — no privacy concerns, no upload limits, no sign-ups. Whether you’re debugging a minified production bundle, cleaning up JSON data from an API response, or just prefer consistent formatting across your team, this tool gives you fast, reliable results. More developer tools are planned for future releases as the hub expands.

Code Formatter

Format and beautify JavaScript, TypeScript, HTML, CSS, and JSON for free — instant syntax highlighting via Prism.js, with your code never leaving your browser.

JSON Formatter & Validator

Validate and pretty-print JSON for free with configurable indentation. Clear, location-aware error messages for invalid JSON — runs entirely in your browser.

Base64 Encode & Decode

Encode text to Base64 or decode Base64 to text for free, with full Unicode support for accents and emoji. Runs entirely in your browser — nothing is uploaded.

UUID Generator

Generate random version 4 UUIDs for free, using your browser's native crypto API. No sign-up, one click to copy, works entirely on your device.

Hash Generator

Generate SHA-256 or SHA-1 hashes for free using your browser's native Web Crypto API. Includes a clear warning against using it for password storage.

URL Encode & Decode

Encode or decode URLs and query parameters for free. Supports component and full-URI modes, with full Unicode support — runs entirely in your browser.

JWT Decoder

Decode a JWT's header and payload for free, entirely in your browser. Decodes only — never verifies a signature and never asks for a signing secret.

Timestamp Converter

Convert Unix timestamps to dates and back for free, in seconds or milliseconds, with UTC and local time shown. Runs entirely in your browser.

Number Base Converter

Convert numbers between binary, octal, decimal, and hexadecimal for free. Supports negative numbers and large values with no precision loss.

Regex Tester

Test regular expressions against sample text for free, with live match and capture group highlighting. Debounced evaluation runs entirely in your browser.

Markdown Previewer

Preview Markdown as safe, rendered HTML live for free. Raw HTML and scripts are never executed — runs entirely in your browser via react-markdown.

Diff Checker

Compare two blocks of text for free, with line-level or word-level diff highlighting. Uses a well-tested diff library — runs entirely in your browser.

Cron Expression Parser

Explain a 5-field cron expression in plain English for free. Covers wildcards, steps, ranges, and lists — runs entirely in your browser.