If you click on a PDF link or open any PDF in the download panel it will be rendered by Firefox PDF Viewer. Like, Google Chrome and Microsoft Edge, Mozilla Firefox comes with a built-in PDF Viewer.įirefox lets you view PDF files you encounter on the web in the browser without needing to open them in an external application. Mozilla has added support for them in Firefox 93. PDF.js, PDF Viewer in Firefox now supports AcroForm and XFA forms and tagged PDFS.
