you can two-finger click on that file then go to Open with > Preview. Step 3: Add PDF, JPG, PNG and other additional files to Preview by dragging and dropping them into thumbnails sidebar.

Whether you’re a Mac or Windows user, we’ve broken down the steps for combining your PDF files. Here is how to do it with whichever computer you have. Our current favorite method for merging ...

If you own a Samsung Galaxy phone, you can use the preinstalled My Files app to add a PDF shortcut to your home screen. Open your file manager or Files app and locate the PDF file. Tap on the ...

but the PDF was created without the necessary administrative rights. In other words, Adobe Reader won't let you add text. What you need is a program that's a little more accommodating, PDF-wise.