Base64 Encoder & Decoder

Encode or decode Base64 entirely in your browser with text and file-friendly controls.

Encode or decode Base64 entirely in your browser with text and file-friendly controls.

Mode

Character set Output newlines Decoded filename

Live stats

0 input chars 0 output chars

Process each line separately Split output into 76-character chunks Use URL-safe Base64 Convert as I type

Browser-only file actions

Load a local file to encode it as Base64, or download decoded Base64 back as a file.

No file loaded.

Editable

Read-only

Choose whether you want to encode plain text or decode Base64.
Adjust charset, newline, URL-safe, line handling, or live mode as needed.
Run the conversion, then copy the result, download text, or download decoded bytes as a file.