Processed in your browser
Base64 Decoder Online
Paste a Base64 string and decode it into readable text.
Paste Base64 to decode.
Output appears here.
Why use Base64 Decoder?
- Format, validate, encode, or decode text directly in your browser.
- Keep common developer utilities available without opening a heavy editor or separate app.
- Use clear error messages to fix malformed data faster.
Common use cases
API debuggingData cleanupEncoding checksReadable code review
How to use Base64 Decoder
1
Paste Base64 text.
2
Decode the string.
3
Copy the readable output.
Frequently Asked Questions
What if the input is invalid?
The tool will show an error instead of returning broken output.
Is Base64 secure?
No. Anyone can decode Base64 text.
Is my data private?
Yes. Decoding runs in your browser.