Online Encoding & Decoding Tools
Free online tools to encode and decode data in various formats. Base64, URL encoding, HTML entities, and JWT tokens. All processing happens locally in your browser.
Base64 Encoder/Decoder
PopularEncode text to Base64 or decode Base64 strings. Full UTF-8 support for international characters.
URL Encoder/Decoder
Encode special characters for URLs or decode percent-encoded strings. Essential for query parameters.
HTML Encoder/Decoder
Convert special characters to HTML entities and vice versa. Prevent XSS and display code safely.
JWT Decoder
Decode JSON Web Tokens to inspect header, payload, and claims. Check expiration and issued time.
Understanding Encoding
Encoding transforms data into a different format for safe transmission or storage. Decoding reverses the process. These tools help you work with common encoding formats used in web development.
Developers use encoding tools when working with APIs, handling authentication tokens, building URLs with query parameters, displaying user-generated content safely, and debugging network requests. These operations are fundamental to web development and come up frequently in day-to-day work.
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