React //top\\ Download File From Base64 String 99%

For smaller files like short PDF receipts or icons, you can embed the Base64 string directly into an anchor ( ) tag's href attribute using a .

using URL.createObjectURL() to trigger the download. Code Example: javascript react download file from base64 string

const downloadBase64AsFile = (base64Data, fileName, contentType) => { // 1. Decode base64 const byteCharacters = atob(base64Data); const byteNumbers = new Array(byteCharacters.length); for (let i = 0; i < byteCharacters.length; i++) { byteNumbers[i] = byteCharacters.charCodeAt(i); } const byteArray = new Uint8Array(byteNumbers); // 2. Create Blob and Object URL const blob = new Blob([byteArray], { type: contentType }); const url = URL.createObjectURL(blob); // 3. Trigger Download const link = document.createElement('a'); link.href = url; link.download = fileName; document.body.appendChild(link); link.click(); // 4. Cleanup document.body.removeChild(link); URL.revokeObjectURL(url); // Release memory }; Use code with caution. Pro-Tips & Best Practices For smaller files like short PDF receipts or