Downloading a file from a fetch response in React requires converting the incoming data stream into a , generating a temporary URL, and triggering a "hidden click" on a virtual anchor element . This approach is ideal for authenticated requests where you cannot simply use a direct link because of the need for custom headers like Authorization . Core Implementation Steps
The following snippet demonstrates how to wrap this logic into a reusable React function: javascript how to download fetch response in react as file
: Use URL.createObjectURL(blob) to generate a unique, temporary URL that points to the file in the browser's memory. Downloading a file from a fetch response in
: Use response.blob() to read the entire response body into memory as a binary large object. : Use response
const handleDownload = async (fileUrl, fileName) => try const response = await fetch(fileUrl, method: 'GET', headers: 'Authorization': 'Bearer YOUR_TOKEN', // Example for authenticated requests , ); if (!response.ok) throw new Error('Download failed'); // 1. Convert response to a Blob const blob = await response.blob(); // 2. Create a temporary URL for the Blob const url = window.URL.createObjectURL(blob); // 3. Create a hidden tag and click it const link = document.createElement('a'); link.href = url; link.setAttribute('download', fileName catch (error) console.error("Error downloading file:", error); ; Use code with caution. Key Considerations