Developed by Adobe Systems, a file with the .PDF file extension is a Portable Document Format file.
PDF files can contain not only images and text, but also interactive buttons, hyperlinks, embedded fonts, video, and more.
You'll often see product manuals, eBooks, flyers, job applications, scanned documents, brochures, and all sorts of other documents available in the PDF format.
Because PDFs don't rely on the software that created them, nor on any particular operating system or hardware, they look the same no matter what device they're opened on which is why most of our study notes are supplied in this format.
How to Open a PDF File
Most people head right to Adobe Acrobat Reader when they need to open a PDF. Adobe created the PDF standard and its program is certainly the most popular free PDF reader out there. It's completely fine to use it, but I find it to be a somewhat bloated program with lots of features that you may never need or want to use.
Most web browsers, like both Chrome and Firefox, can open PDFs themselves. You may or may not need an add-on or extension to do it, but it's pretty handy to have one open automatically when you click a PDF link online. Most smartphones and portable devices also support PDFs either natively, or using free 3rd party apps.
Viewing/Reading options
With PDFs, not only can you scroll, but you can click to next page (using arrow keys on keyboard), view pages side-by-side (like a physical book), view the bookmarks sidebar and even highlight and add your own notes. For more information on reading PDFs, visit the Adobe site here...
Please note: Koinonia House does not endorse, are affiliated or claim any responsibility for 3rd party websites and software.