Base64 to File
Base64 to File Overview
Decode Base64 string to file
Base64 to File is a powerful decoder that translates Base64 encoded strings back into their original binary file format. Whether you have a raw Base64 string from an API response, a Data URI from an HTML file, or an encoded email attachment, this tool instantly reconstructs the original file for you to preview and download. It features an intelligent auto-detection system that identifies the file type (MIME type) from the Data URI header, or allows you to manually select the correct format if the header is missing. The tool supports instant previews for Images (JPG, PNG, GIF), Audio (MP3, WAV), PDF documents, and even Video files. This is an indispensable utility for developers debugging data transmission, reverse-engineering embedded assets, or simply recovering files from encoded text formats.
How to Use Base64 to File
- Paste your Base64 string into the input text area.
- The tool attempts to auto-detect the file type (if `data:` prefix is present).
- If not detected, select the correct format (e.g., PNG Image, PDF) from the dropdown.
- Click "Decode File" to process the string.
- Preview the file content immediately (play audio, view image).
- Click "Download File" to save it to your device.
Frequently Asked Questions
- Can I decode an image?
- Yes, simply paste the Base64 string. The tool will preview the image and let you download it as a PNG, JPG, etc.
- How do I know the correct file extension?
- If your string starts with `data:image/png...`, we auto-detect it. If it is a raw string, you must know the original type (e.g., if it was a PDF) and select it manually.
- Can I play audio files directly?
- Yes! If you decode a Base64 audio string (like MP3), an audio player will appear for you to listen before downloading.
- Is the decoded file safe?
- The file is reconstructed exactly as it was encoded. We do not modify the content. Always ensure you trust the source of the Base64 string.
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