Developer Tools
Free, client-side utilities. Everything runs in your browser — no data is ever sent anywhere.
Base64 Encoder
Encode and decode text or files using Base64. Supports Unicode and binary file uploads.
HTML Encoder
Convert special characters to HTML entities and back. Useful for embedding code in HTML.
URL Encoder
Percent-encode and decode URL components. Handles both full URLs and individual parameters.
Quoted-Printable
Encode and decode Quoted-Printable content, the standard encoding for email bodies.
GUID Generator
Generate cryptographically random GUIDs in four formats. Generate one or many at once.
Machine Key Generator
Generate ASP.NET machine keys for web farm deployments. Outputs a ready-to-use config snippet.
JSON Formatter
Format, minify and validate JSON with live error highlighting. Supports custom indent size.
Hash Generator
Generate SHA-1, SHA-256 and SHA-512 hashes from text or a file using the Web Crypto API.
Timestamp Converter
Convert Unix timestamps to human-readable dates and back. Shows local, UTC, ISO 8601 and relative time.
JWT Decoder
Decode and inspect JWT header, payload and expiry. Runs locally — your token never leaves the browser.