Tools

Base64 Encoder/Decoder

Encode and decode text and files to/from Base64

Input
0 bytes0 chars
Encoded output will appear here...
0 bytes0 chars

Standard Base64

Uses A-Z, a-z, 0-9, +, / with = padding. Defined in RFC 4648. Encoding increases size by ~33%.

URL-safe Base64

Replaces + with -, / with _, and removes padding =. Safe for URLs, filenames, and query strings.

MIME Base64

Inserts line breaks every 76 characters (CRLF). Used in email (MIME) and PEM certificates.

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