Encoding & Hashing

Base64 Encoder & Decoder Encode text to Base64 and decode it back — UTF-8 safe, entirely in your browser. URL Encoder & Decoder Percent-encode and decode URLs or query parameters without breaking special characters. Number Base Converter Convert numbers between binary, octal, decimal and hexadecimal — all four fields update as you type. Hash Generator Generate MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes of any text — right in your browser. HMAC Generator Compute HMAC-SHA-256 and HMAC-SHA-512 signatures with your secret key — right in your browser. JWT Decoder Decode JWT header and payload, inspect claims and expiration — without the token leaving your browser. HTML Entities Encoder & Decoder Encode special characters into HTML entities and decode them back — in your browser. Base64 to Image Decoder Decode a Base64 string and display or download it as an image file.