Base64 decoder
Paste base64 (wrapped or not, standard or URL-safe) to see what it decodes to.
Runs in your browser. Nothing is sent unless you choose Check reputation, and nothing is stored.
What it shows
Decoded text when it's text, or a hex dump when it isn't. Known file signatures are named, so a blob that's really a Windows executable, Office document, ZIP, PDF or image says so.
If the decoded text is itself something Bluebench understands, such as a URL or a JWT, you can analyse it with one tap.
Nothing is uploaded
Decoding happens in your browser. What you paste isn't sent to our server or anyone else, so it's safe to use with tokens and emails from real incidents.