Ctrl+Click, or right-click if you’re using an external mouse, on the PDF and select Get Info from the menu. Finally, click on the Change All button just underneath the dropdown menu and select ...

Nearly every computer these days comes with a PDF viewer, a program that allows you to read, print, and sometimes edit a PDF file. In the newest versions of Windows 10, the default PDF viewer is ...

Unlike other browsers, Firefox only uses internal settings to select a PDF viewer. Open the "Firefox" menu, click "Options" and open "Applications." Scroll down to "Portable Document Format (PDF)." ...

Portable document format (PDF) files remain a popular choice for business documents ranging from contracts and forms to manuals and reports, so there's a good chance you need to open them often.