Base64 to File Online
Convert a Base64 string back into a downloadable file online for free. Decode Base64 to images, PDFs, and any file type with automatic extension detection.
Got a Base64 string and need the real file back? Base64 to File decodes it and rebuilds the original image or document for download — entirely in your browser, with no upload required.
How to use Base64 to File Online?
Paste your Base64 string or data URI into the input box.
The tool validates the string and can automatically detect the correct file type.
Choose or confirm the file extension if needed.
Click download to save the decoded file directly to your device.
Why use Base64 to File Online?
- Rebuild any file. Decode a Base64 string back into the original image, PDF, or document.
- One-click download. Get the reconstructed file saved straight to your device.
- Private decoding. The string is decoded locally and never sent to a server.
Professional Features
Any File Type
Decode Base64 strings into images, PDFs, documents, or virtually any kind of file.
Automatic Extension Detection
The tool can detect the file type from the data so your download gets the right extension.
Private & Free
Decoding happens in your browser, so your data stays private and the tool is completely free.
Common Questions
What kinds of files can I create?
You can decode Base64 into virtually any file type, including images, PDFs, and documents.
Is there a maximum size?
The limit depends on your browser and device memory, but typical Base64 strings decode without any issue.
Is my data kept private?
Yes. Decoding happens locally in your browser, so your Base64 data is never uploaded to a server.