DNS Insight

Base64 Decode

Base64 Decoder - Decode Base64 Strings

Convert Base64 encoded strings back to their original form for debugging APIs and JWTs.

How It Works

Base64 decoding reverses the encoding process, converting each group of 4 Base64 characters back into 3 bytes of original data.

Understanding Results

The decoded output shows the original data. If the input is invalid Base64, an error will be shown.