What if the string is not valid Base64?

The tool shows "Invalid Base64 input" instead of guessing. Check for missing padding (=) or stray characters.

Can it decode Base64URL (JWT) values?

Standard Base64 is supported. Base64URL uses - and _ instead of + and /; replace those first for a clean decode.

encode

Base64 Decode

Decode Base64 back to text

About the Base64 Decode tool

Base64 decoding converts a Base64 string back to the original text. Paste a token, a data-URL payload, or an email header value and read what it actually contains. Whitespace in the input is ignored; invalid input is reported rather than producing garbage.

Input

0 words·0 characters·0 lines·0 min read

Output

0 words·0 characters·0 lines

How to use

1Paste the Base64 string into the Input field.
2The decoded text appears in the Output field.
3Copy the result.

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