How to use Base64 Decoder
Paste a Base64 encoded string and click Decode to convert it back to plain text. This is the reverse operation of Base64 encoding, useful for reading encoded data or debugging Base64 issues.
What is Base64 Decoding?
Base64 decoding is the process of converting Base64 encoded text back to its original binary or text representation. It's essential for reading data that was encoded using Base64, such as email attachments or API responses.
Common Use Cases
- Debugging APIs - View Base64 encoded response bodies
- Reading Email Headers - Decode quoted-printable or Base64 email content
- Extracting Embedded Data - Pull images or files from data URLs
- Configuration Analysis - Decode stored credentials or config values
FAQ
What happens if I decode invalid Base64?You'll get an error. Make sure the input is valid Base64 (proper length and characters).
Can I decode images?Yes, but the decoded binary won't display as text. For images, use the output in data URL format.
Is this secure?Yes, all decoding happens locally in your browser. No data is sent to any server.