Click the "Decode" or "Download" button. The tool will process the string and trigger a browser download for the resulting file. Downloading via JavaScript (For Developers)

Most tools automatically detect the file type using "magic numbers" (internal file signatures), but some may require you to manually select the extension (e.g., .jpg , .pdf ).

For smaller files or when you have a complete Data URI, you can use a temporary anchor element: JavaScript: save base64 string as file - Stack Overflow

Downloading a file from a Base64 string online is a common task for developers and power users who need to restore binary data—like images, PDFs, or documents—from a text-based format. Whether you are using a dedicated tool or writing a custom script, the process involves converting the ASCII character string back into its original binary form. How to Download Using Online Tools

Copy your Base64 string into the input field. These tools often handle both raw Base64 and full Data URIs (e.g., data:image/png;base64,... ).

If you are building an application where an API returns a Base64 string, you can trigger a download directly in the user's browser. Using a Simple Anchor Tag