Base64 Decode
Decode Base64 strings back to text or download as a binary file.
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Decode a Base64 string back to readable text, or download it as the original binary file. Useful for inspecting tokens, data URIs, and encoded payloads — all in your browser.
Frequently asked questions
How do I decode Base64?
Paste the Base64 string and it’s decoded to text immediately; if it represents a file, you can download the binary result.
Why does decoding fail?
The input must be valid Base64. Stray characters, missing padding, or a truncated string will cause an error.
Does it handle URL-safe Base64?
Yes — both standard and URL-safe variants (using - and _) are accepted.
Is it private?
Yes — decoding runs in your browser with no uploads.