Thank you for the reply! Indeed I installed the extension and enable it, but somehow I still couldn’t open the pdf link. When I click on a pdf link, the browser just download it without using the extension to display the pdf, and also, when I click o...

Same here! Really need a PDF viewer in the browser to read papers. An example of link is https://arxiv.org/abs/2001.11427 and when I click the PDF, it just download it instead of opening it in the browser. Also, clicking the download content does not...