$ base64

Base64 Encode / Decode

Convert text to Base64 and back, with URL-safe mode and full Unicode support. Runs in your browser.

URL-safe (- _ no padding)

Input

Output

Ad slot

About Base64

Base64 represents binary data using 64 printable ASCII characters, growing the size by about 33%. It is used in data URIs, email attachments, JWTs and HTTP Basic auth. This tool encodes text as UTF-8 first, so emoji and non-Latin characters round-trip correctly.

URL-safe variant

Standard Base64 uses + and /, which clash with URLs. The URL-safe alphabet swaps them for - and _ and usually drops the = padding.