Convert plain text to Base64 or decode existing Base64 back to readable text, entirely client-side.
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Convert plain text to Base64 or decode existing Base64 back to readable text, entirely client-side. Common questions — like does this support base64url encoding — are answered in the FAQ below.
Add your input to the workspace above, review the result, then copy or download it when it's ready. No account or installation is required.
Base64 Encoder/Decoder runs in your browser, so the information you enter stays on your device instead of being uploaded to a server.
A few worked examples so you know what to expect before you paste in your own input.
Input
Hello, World!
Output
SGVsbG8sIFdvcmxkIQ==
Input
foobar
Output
Zm9vYmFy
Input
Zm9vYmE=
Output
fooba
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