Your files stay on your device

Base64 encoder and decoder

Convert text to and from Base64: unicode-safe, standard or URL-safe alphabet.

Encoding with the standard alphabet (+ and /), UTF-8 bytes. The input is used exactly as typed, never trimmed.

You paste
Paste or type, encoding runs as you type
Encoded
Result appears here as you type
Files

Encode any binary file (up to 50 MB) to Base64 text, or decode a Base64 text file (up to 50 MB of decoded bytes) back to a download: processed in chunks in this tab, nothing uploaded.

Binary files never touch the text panel. They are chunked in memory.
Paste, drop, or type to begin. Everything stays on this device.

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