Encode and decode Base64, URLs, HTML entities, JWTs, and more.
Encoding transforms data into a specific format for safe transmission, storage, or display. Developers run into encoding constantly — Base64 for embedding binary data in JSON or HTML, URL encoding for query parameters, HTML entity encoding to prevent XSS, and JWT decoding to inspect authentication tokens. This collection gives you instant access to all major encoding and decoding operations. Paste your input, get your output, copy it, and move on. Tools cover Base64 (standard and URL-safe), URL percent-encoding, HTML entities, Unicode escaping, JWT inspection, and more. Every conversion happens client-side, which matters when you're decoding JWTs or other sensitive tokens — your data stays on your machine.
Popular in Encoding & Decoding
Encode and decode Base64 strings instantly
Free online Base64 encoder and decoder. Convert text to Base64 encoding or decode Base64 strings back to plain text.
Encode and decode URL components
Free online URL encoder and decoder. Percent-encode special characters for URLs or decode encoded URL strings.
Encode and decode HTML entities
Free online HTML entity encoder and decoder. Convert special characters to HTML entities or decode entities back to text.
All Encoding & Decoding
Encode and decode Base64 strings instantly
Encode and decode URL components
Encode and decode HTML entities
Decode and inspect JSON Web Tokens
Encode and decode Base32 strings instantly
Apply ROT13 cipher to text
Convert text to and from Morse code
Convert between binary and text
Convert between hexadecimal and text
Convert ASCII characters to hex codes and back
Escape and unescape Unicode sequences
Encode and decode internationalized domain names
View UTF-8 byte sequences for any text
Convert text to Braille Unicode characters
Convert text to NATO phonetic alphabet
Encode and decode Base58 (Bitcoin) strings
Encrypt and decrypt text with a configurable shift
Decode SAML responses and assertions
Encode and build JSON Web Tokens
Convert Protobuf definitions to JSON Schema
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About Encoding & Decoding
Encode and decode Base64, URLs, HTML entities, JWTs, and more. All tools in this category run entirely in your browser with no server-side processing. Your data stays on your device.
Each tool is designed for speed and simplicity. Paste your input, configure options if needed, and copy the result with one click. No sign-up, no installation, no limitations.