Developer Tools
JSON, Base64, hashing and other dev utilities.
JSON Formatter Free online JSON formatter to beautify, validate and minify JSON in your browser. Private, no upload, no sign-up. Paste JSON, pick a mode, copy clean output. Hash Generator Free online hash generator. Paste text to get MD5, SHA-1, SHA-256 and SHA-512 hashes instantly, all in your browser. No upload, no sign-up, fully private. Regex Tester Free online regex tester. Type a pattern and flags, paste your text, and see every match with its index and capture groups live. Runs in your browser. HTML Encode / Decode Free HTML encoder and decoder. Convert characters like &, <, > and quotes into HTML entities or decode entities back to plain text, right in your browser. Markdown Preview Free live Markdown preview tool. Type Markdown, see rendered HTML side by side instantly in your browser. Private, no upload, no sign-up. JWT Decoder Free online JWT decoder. Paste a JSON Web Token to instantly read its header and payload as clean JSON. Runs in your browser, nothing is uploaded. Color Converter Free HEX color converter. Paste a HEX code and instantly get RGB and HSL values in your browser. No upload, no sign-up, works on any device. SQL Formatter Free online SQL formatter that beautifies messy queries in your browser. Uppercase keywords, line breaks per clause, indented columns. No upload, no sign-up. Diff Checker Compare two blocks of text online and see added and removed lines instantly. Free diff checker that runs in your browser, no sign-up, your data stays private. CSS Minifier Free online CSS minifier that compresses stylesheets in your browser. Remove comments and whitespace to shrink CSS file size and speed up your site. No upload. JavaScript Minifier Free online JavaScript minifier that shrinks JS file size by removing comments and whitespace. Runs in your browser, no upload, no sign-up, instant and private. HTML Minifier Free online HTML minifier. Paste your markup to strip comments and extra whitespace, shrink file size and load pages faster. Runs in your browser, no upload. URL Parser Free online URL parser. Paste any link to instantly break it into protocol, host, port, path, query string and fragment. Works in your browser, no sign-up.