Encode or decode base64

Standard or URL-safe, and it handles binary correctly rather than mangling it through a string.

Drop a file here, or choose one, or type below.

.txt · .md · .html · .csv · up to 4 MB · processed in memory and never stored · or paste with ⌘V

Or type it in

Options

Mode

encode or decode.

UrlsafeUse the URL-safe alphabet (`-` and `_`).PaddingKeep trailing `=` when encoding.

1 credit

Doing this a lot?

Same tool, as an API.

This page calls exactly the same code you would from your own program — no daily cap, 1 credit per call. See the endpoint reference.