Enable firefox pdf viewer

So Google Chrome brought the PDF viewer to the web browser with a built-in feature; Since then, Firefox users have lost this great feature. The good news is that since Firefox 15, PDF viewer support is part of the browser, but it is disabled by default and, for now, it is up to you to enable it. You can view PDF files inline in Firefox without need of any plugins. Mozilla offers PDF.JS add-on in AMO for Firefox versions before 16, PDF.JS is Mozilla's project to build native HTML5 PDF Renderer for Firefox, this PDF Viewer is written on web technologies like HTML5, CSS3 and JavaScript, that's How To Enable Native PDF Viewer on Mozilla Firefox 15 If you have been using Google Chrome, you should be familiar with its native PDF viewer. Firefox 3.5 and above need Java 6 Fix level 16 +; the same version works for both Firefox and Chrome. Firefox 35's PDF Viewer (pdf.js) works here (tested with Kubuntu 14.04 and Arch Linux). If it "does not work" (a download is offered instead) for you, check Follow these instructions to re-enable PDF.js: Type about:config in your location bar and press Enter. Accept the This may void your warranty Firefox now includes a built-in PDF viewer that allows me to see PDF files found on the web without a plugin. The built-in PDF viewer is enabled by default. However, I found that this pdf viewer is not working properly with various web-sites, and it works slowly. The default PDF Viewer can render pretty much all the PDF out there except interactive PDF forms. Click to open it and enable the setting "Download PDF files instead of automatically opening them in Chrome". The change takes place right away. Change Default PDF Viewer in FireFox. Home › Browsers › Firefox › Make PDF Viewer the default one. Firefox 78 lets you set the browser as the default app for viewing PDFs on Windows 10. The update is available with the Firefox 78 installer, so read the lines below in order to easily select Firefox as your default PDF viewer. I have enabled the dark mode in Firefox version 76.0 as well as installed the dark reader extension. The extension allows web pages to go dark. I just normally open F12 while reading any PDF and enter the below command in console.: viewer.style = 'filter: grayscale(1) invert(1) sepia(1)'. Although Firefox PDF viewer worked well with the PDFs tested, it gave us a warning that "this PDF document might not be displayed correctly" and offers up a quick click solution to use a different viewer. Depending on the complexity of the PDF you're trying to view, you might want to take advantage of this.