Base64 decode

Paste Base64 text and get the bytes it represents back.

Line breaks, spaces, the url-safe alphabet and a missing = at the end are all handled — pasted Base64 rarely arrives clean, and refusing it on a technicality would be unhelpful.

A leading data:image/png;base64, prefix is recognised and stripped, so you can paste a data URL straight out of a stylesheet or a developer console.

Base64 in the wild is usually a token, a key or an embedded document. That is a good reason to decode it here, in a page that only reads what you paste, rather than in a stranger’s text box.