Base64 → JSON
Giải mã Base64 về JSON ngay trong trình duyệt — preview lại file để chắc chắn không hỏng.
AK
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Choose Action
Encode, decode or view information
View Results
See output and extra details
Input (Binary)
101010 111100 110101 ...
Split into 6-bit
101010 111100 110101 ...
Convert to Index
42 60 53 ...
Base64 Characters
q 8 1 ...
100% Private & Secure
All processing happens in your browser. No data is sent to any server.
For structured payloads, inspect the decoded document with JSON Validator or convert it with JSON to CSV.
Decode a Base64 string back into the JSON document it originally represented. The output is byte-identical to what was encoded; if you want indentation or property reordering, run the result through JSON Beautifier afterwards.
Useful for opening JWT-like containers and any opaque token where the payload is JSON wrapped in Base64.
No. Decoded text is returned exactly as it was encoded; pipe it through JSON Beautifier afterwards if you want indentation.
An error is shown immediately and no output is produced.
Yes for the inner JSON sections. Many JWTs use base64url, so enable the URL Safe variant before decoding.
No. Signature verification requires the signing key and is out of scope for this tool.