检测浏览器是否可以显示 pdf 内联

Question

How can I make sure a browser is capable of displaying a pdf inline? I used to check the navigator mime type like this:

if (navigator && navigator.mimeTypes && navigator.mimeTypes['application/pdf'])

However this fails in Firefox 52. For my use case I don't need to know this before the pdf file is loaded, so maybe I can check for content inside the embed tag or something similar?

Answer 1

I might be a tad late to the party, but I had the same problem and stumbled upon this:

§ 8.9.1.6 PDF viewing support

window.navigator.pdfViewerEnabled

Returns true if the user agent supports inline viewing of PDF files when navigating to them, or false otherwise. In the latter case, PDF files will be handled by external software.

Browser compatibility table

After MDN web docs article :