chrome PDF viewer can't download file

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Here is my situation, I got a server running a PDF generator, when I make a request with some params, it will give me back a PDF file, the PDF is not stored in the server it's generated during the runtime.

Everything goes fine, I can get the PDF open in chrome's PDF viewer, but if want to download the file, an error occurred, like the image shows. enter image description here

Because Chrome go to the origin URL to request the file, but the file is not a static resource on the server.

I don't know if anybody has run into this problem?

pdf-viewer google-chrome pdf
3 Answers

Just as an additional comment:

We had the same problem on a project, on Chrome only.

Authenticated GET request would fetch the PDF as an attachment from API, and we would forward it via window.createObjectURL(blob) to the browser viewer.

The Network Error was due us invoking window.revokeObjectURL(url); after opening the PDF. When we removed that line, the blob wasn't garbage collected immediately after opening.

fetch(request)
   .then(async response => {

       if (!response.ok) {
         return reject(response.statusText);
       }

       const blob = await response.blob();
       const url = await window.URL.createObjectURL(blob);

       window.open(url, '_blank');
       URL.revokeObjectURL(url); // This line was causing the problem
       resolve();
   })
   .catch(reject)
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