Base64 Decoder

Decode Base64 encoded text back to original format.

0 characters
0 characters

SGVsbG8gV29ybGQ= → "Hello World"

Paste Base64, see what's actually in there.

Decoding Tips

Decodes to garbage? The original was probably binary data (image, PDF), not text.

JWT inspection: The middle section (between the dots) is Base64. Decode it to see claims, expiration, user data.