Encoding & Decoding

Encode and decode data in Base64, URL, HTML entities, Unicode, and JWT formats. Safely transform data for transmission, storage, and web use.

14 tools

Base64 Encode

Encode text or files to Base64. Used for embedding binary data in text-based formats.

Base64 Decode

Decode Base64 strings back to plain text or binary. Instantly reveals the original content.

URL Encode

URL-encode a string to make it safe for use in URLs and query parameters.

URL Decode

Decode percent-encoded URL strings back to readable text.

HTML Encode

Convert special characters to HTML entities to safely display them in HTML documents.

HTML Decode

Convert HTML entities back to their original characters for readable output.

Unicode Encode

Convert text to Unicode escape sequences (\uXXXX) for safe embedding in source code.

Unicode Decode

Convert Unicode escape sequences back to readable text characters.

JWT Decoder

Decode JWT tokens and inspect the header, payload, and signature without any verification.

JWT Encoder

Build and sign JWT tokens with HS256 using browser-native Web Crypto APIs.

Binary / Text Converter

Convert text to binary, hexadecimal, octal, or decimal byte representation and back.

String Escape / Unescape

Escape and unescape strings for JavaScript, JSON, HTML, SQL, regex, CSV, and shell.

Unicode Character Search

Browse Unicode blocks, search characters by code point or description, and copy HTML/CSS/JS escapes.

HTML Entity Reference

Browse and search all HTML entities. Copy named, decimal, hex, or character forms instantly.

All Encoding & Decoding