What is a Base64 to file decoder?
A Base64 to file decoder turns a Base64 string or data URL back into downloadable bytes. Use it when logs, JSON exports, API responses, or email payloads contain a file encoded as text.
How to use it
- Paste raw Base64 or a full data URL.
- Set a MIME type if the input is raw Base64 and you know the file type.
- Download the decoded file.
Example
Input: SGVsbG8sIGZpbGUh
Output: a downloadable text-like binary file containing Hello, file!
Common mistakes
- A data URL includes the MIME type, but raw Base64 does not.
- Truncated log values cannot be recovered into complete files.
- Unknown files should be handled cautiously, especially if they came from an untrusted source.
Related tools
- Reverse the conversion with File to Base64.
- Decode known images with Base64 to image.
- Decode known PDFs with Base64 to PDF.
Privacy and security
The file is reconstructed locally in your browser. Unknown decoded files should not be executed.