Base64 to File Converter
Convert Base64 Data URL strings back to original binary files and download them.
Download Config
Base64 to File Converter Online - Decode Base64 to Original Files
Decode Base64 strings or Data URIs back to their original file formats (images, documents, PDFs, ZIP archives). Automatically detects MIME types and downloads binary files safely. 100% offline.
Key Features
- Auto MIME Detection: Automatically extracts MIME types, proper file extensions, and file sizes from the input string.
- 100% Client-Side Privacy: Files are decoded and compiled directly in your browser. No files are uploaded to any server.
- Inline Preview Support: Preview generated images or PDF documents on-the-fly before downloading them.
How to Convert Base64 to File
- Paste your Base64 encoded string or Data URI in the input box.
- Review the auto-detected metadata details (MIME type and file size).
- Specify your custom download filename and extension if needed.
- Click "Download File" to reconstruct and save the binary file locally.
Frequently Asked Questions (FAQs)
What if my Base64 string doesn't have a MIME type prefix?
If it is a raw Base64 string, you can select the correct file extension from the dropdown menu (like .png or .pdf), and the decoder will bundle it into the correct format.
Does Base64 to file conversion alter the file quality?
No. Base64 is a lossless representation. The reconstructed binary file will be identical byte-for-byte to the original file.