Most modern web browsers like Google Chrome, Mozilla Firefox, Microsoft Edge, and Safari have free built-in PDF viewers. Simply drag and drop the PDF into an open browser window, and the integrated PDF viewer will display your PDF, allowing you to view the contents without the need to pay for additional software.
Source : https://xodo.com/pdf-viewer
Browse and open files and folders Open the Files app on your iPhone. Tap Browse at the bottom of the screen, then tap an item on the Browse screen. If you don't see the Browse screen, tap Browse again. To view recently opened files, tap Recents at the bottom of the screen.
Source : https://support.apple.com/guide/iphone/search-for-files-and-folders-iphe4bff8827/ios
You can open a list of your recent downloads in Chrome by clicking the Menu button (☰) and selecting Downloads, or by pressing Ctrl + J (Windows) or ⌘ Cmd + J (Mac).
Source : https://www.wikihow.com/Open-Downloads
Select Start > Settings > Apps. Apps can also be found on Start . The most used apps are at the top, followed by an alphabetical list.
Source : https://support.microsoft.com/en-us/windows/how-to-check-if-an-app-or-program-is-installed-in-windows-10-5af73cea-f875-dfa0-4cd1-72a02aa06436
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Source : https://m.youtube.com/watch?v=Yoc2NRM8SB0
View & open filesGo to drive.google.com.Log into your Google account with your username and password. ... Double-click a file.If you open a Google Doc, Sheet, Slides presentation, Form, or Drawing, it will open using that application.More items...
Source : https://support.google.com/drive/answer/2423485?hl=en