Base64 / URL Encoder-Decoder

Encode and decode strings using Base64, Base64URL, and URL encoding formats

Input

Encoding

Output

Result will appear here

0 chars

0 chars

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Security Note: All encoding and decoding is performed entirely in your browser. No data is sent to any server.

Encoding Formats Explained

Common encoding schemes used in authentication and web development

Encodes binary data into ASCII using 64 characters (A-Z, a-z, 0-9, +, /). Commonly used in email, data URIs, and API payloads.

URL-safe variant of Base64 that replaces + with - and / with _, and removes padding. Used in JWTs, PKCE, and OAuth2 tokens.

Replaces unsafe characters with % followed by hex values. Essential for query parameters, form data, and redirect URIs in OAuth2.

Represents binary data as hex characters (0-9, a-f). Used for hashes, cryptographic keys, and binary data inspection.

AuthAction handles encoding, token generation, and secure data transmission for all your authentication needs.

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