Base64 Encoder / Decoder

Encode text or files to Base64, or decode Base64 strings back to plain text.

Input type

Mode

URL-safe (- and _ instead of + and /)

Plain text input

Base64 output

What is Base64?

Base64 is an encoding scheme that converts binary data into a string of ASCII characters using 64 printable characters (A-Z, a-z, 0-9, +, /). It is commonly used to embed binary data in text formats like JSON, XML, HTML, and email.

Standard Base64

Uses + and / characters. Standard for most use cases like data URIs and email attachments.

URL-safe Base64

Replaces + with - and / with _ to avoid encoding conflicts in URLs and filenames.