Base64 Encoder / Decoder

Base64 Encoder/Decoder converts binary data to ASCII text and back. It's widely used in web development for embedding images in HTML/CSS, encoding data in JWTs, sending binary data in APIs, and storing complex data in text-based formats like JSON and XML.

Comment utiliser

1. 1Paste the text or Base64 string you want to convert.
2. 2Click "Encode" to convert plain text to Base64.
3. 3Click "Decode" to convert a Base64 string back to plain text.
4. 4The output appears below immediately.
5. 5Copy the result with the copy button.

Fonctionnalités

• ✓Encode any text to Base64
• ✓Decode Base64 strings back to plain text
• ✓Handles UTF-8 characters correctly
• ✓Runs entirely in your browser — private and secure
• ✓Free with no registration

Questions fréquentes