Base64 Encoder/Decoder

Encode and decode Base64 strings and files

Real-time Processing

URL-Safe Mode

File Support

Input Text

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Output will appear here...

URL-Safe Mode

Replace +/ with -_

Line Breaks

Add line breaks every 76 chars

Base64 encodes binary data using 64 ASCII characters (A-Z, a-z, 0-9, +, /).

URL-Safe mode replaces + with - and / with _ for safe use in URLs.

Encoded data is ~33% larger than the original.