Base64 Encoder & Decoder

Convert text to Base64 and back with full Unicode support, or turn a file into a data URL for embedding. Decoding accepts URL-safe alphabets, missing padding and line breaks, and can hand you a real file back at the end.

URL-safe alphabet

Wrap at 76 chars

Plain text

Base64

Encoding and decoding happen in this tab — nothing is sent anywhere.

How to use Base64 Encoder & Decoder

Switch between text and file mode with the tabs.
Use the URL-safe alphabet for tokens that travel in a query string.
Decoding tolerates missing padding, line breaks and data: prefixes.
In file mode, encode any file or decode Base64 back into a download.

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