Security
Base64 Encode/Decode
UTF-8 safe · URL-safe option
Applies to encoding output; decoding accepts both forms.
All conversion runs locally in your browser. Use for data handling, not for secrets without proper encryption.
About the Base64 Encode/Decode
A free Base64 encoder and decoder for text, with a URL-safe option for tokens and query strings.
How to use the Base64 Encode/Decode
- Paste the text.
- Choose encode or decode.
- Copy the result. Use the URL-safe option if the value will sit in a link.
What to check
Base64 is an encoding, not a password. Anyone can decode it.
What is URL-safe Base64?
It swaps the characters that would break a query string, so the value can travel in a URL.
Can I decode a string I did not encode?
Yes, if it is valid Base64. Invalid padding or characters will not decode.