use Illuminate\Support\Facades\Storage; public function downloadWithTempFile() { $base64Data = '...'; // Base64 string $data = base64_decode($base64Data); $fileName = 'report_' . time() . '.pdf'; $tempPath = storage_path('app/public/' . $fileName); // Save to local storage file_put_contents($tempPath, $data); return response()->download($tempPath)->deleteFileAfterSend(true); } Use code with caution. 3. Handling Data URIs
The most efficient way to handle Base64 downloads without creating temporary files on your server is using the streamDownload() method. This method takes a callback that outputs the binary data, allowing Laravel to handle the headers for you. laravel download base64 file
In Laravel, downloading a file from a Base64 encoded string typically involves decoding the string and returning it as a response. You can achieve this by streaming the content directly to the browser or temporarily saving it to the disk before sending the download response. 1. Direct Stream Download (Recommended) This method takes a callback that outputs the
: If you are receiving Base64 strings from users, use custom validation or packages like laravel-mixins to ensure the content matches the expected MIME type. For massive files
: Decoding very large Base64 strings can consume significant server memory. For massive files, consider Streaming Files from a disk instead.
const link = document.createElement('a'); link.href = 'data:application/pdf;base64,' + base64String; link.download = 'filename.pdf'; link.click(); Use code with caution. Key Considerations