Download !!exclusive!! Base64 Excel File React May 2026

application/vnd.openxmlformats-officedocument.spreadsheetml.sheet application/vnd.ms-excel .csv text/csv react-base64-downloader - NPM

For larger Excel files, using a (Binary Large Object) is more memory-efficient than a Data URI. Browsers may struggle with extremely long strings in the href attribute, but Blobs use a temporary URL that manages memory better. javascript download base64 excel file react

const downloadBlobExcel = (base64String, fileName) => { // Convert Base64 to a binary array const byteCharacters = atob(base64String); const byteNumbers = new Array(byteCharacters.length); for (let i = 0; i < byteCharacters.length; i++) { byteNumbers[i] = byteCharacters.charCodeAt(i); } const byteArray = new Uint8Array(byteNumbers); // Create a Blob from the binary array const blob = new Blob([byteArray], { type: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet' }); // Create a URL and trigger the download const url = window.URL.createObjectURL(blob); const link = document.createElement('a'); link.href = url; link.setAttribute('download', `${fileName}.xlsx`); document.body.appendChild(link); link.click(); // Clean up link.parentNode.removeChild(link); window.URL.revokeObjectURL(url); }; Use code with caution. application/vnd

: Dynamically create an element, set its href to the data URI, and trigger a click event. javascript const byteNumbers = new Array(byteCharacters.length)

If you prefer a more declarative, component-based approach, several libraries simplify the process.