Base64 Decoder
Decode Base64 encoded text back to its original form
How to Use Base64 Decoder
- Paste your Base64 encoded text into the input field
- The decoded result appears automatically
- Click "Copy" to copy the decoded text to your clipboard
- Invalid Base64 will show an error message
About Base64 Decoder
Decode any Base64 encoded string back to readable text instantly. Essential for developers working with APIs, JWT tokens, encoded URLs, or debugging data transfers. All decoding happens in your browser for complete privacy.
Frequently Asked Questions
What if my Base64 string won't decode?
Make sure your input is valid Base64. It should only contain letters (A-Z, a-z), numbers (0-9), plus (+), slash (/), and possibly equals (=) padding at the end.
Can I decode Base64 images?
This tool decodes to text. Base64 images would decode to binary data which isn't displayable as text. We may add image support in the future.
Is the decoded data secure?
Yes, all decoding happens locally in your browser. Your data is never sent to any server.
What's the maximum length I can decode?
There's no strict limit, but very large strings may be slow. For best performance, keep inputs under a few megabytes.