The most efficient way to download a PDF in the browser is by creating a "hidden" anchor element and triggering a click event. javascript
PHP uses the base64_decode function to handle the conversion and can force a download by sending specific HTTP headers. download pdf from base64
In a backend environment, you decode the string into bytes and write those bytes directly to a file. The most efficient way to download a PDF
function downloadPDF(base64String) { // Create a link element const link = document.createElement("a"); // Set the href to the base64 data with the correct MIME type link.href = `data:application/pdf;base64,${base64String}`; // Specify the filename for the download link.download = "document.pdf"; // Trigger the download link.click(); } Use code with caution. // Trigger the download link.click()