The Mac’s Swiss Army Knife App for PDFs & Images: Preview
For most of the time, you double click on a PDF or image on your Mac and Preview will open it. But, it can do so much more than that! You can edit and crop images and if open a PDF, all you need to do is open up thumbnail view and you can a bunch of other things as well!
But first, how do I enable thumbnail view?
Make sure you open a PDF first and then go to the view menu button in the top left hand corner of the window.
Tip 1 — Extracting a page from a PDF
You don’t need the entire 35 pages of a PDF; maybe just 1 page. With thumbnail view enabled, simply drag the thumbnail of the page you want onto the desktop and presto!
Tip 2 — Combining or adding pages from one PDF to another PDF
Make sure you have one of the PDFs open with thumbnail view enabled. Simply drag the other PDF from either the desktop (or wherever the PDF is) into the thumbnail section of the PDF that’s opened. Once you’ve done this, you can drag the thumbnails up and down to re-arrange if necessary.
Tip 3 — Deleting a page from a PDF
With thumbnail view enabled, simply click on a thumbnail/page of the PDF that you want to delete, go to Edit and select Delete. Simple!
Tip 4 — BONUS! Using Magnifier to zoom in on your PDF or image
Sometimes images or text can be too small. Especially if your Mac is connected to a projector in the classroom and you want to focus in on something specific. With your PDF or image opened in Preview (no need for thumbnail view for this one!), click on the tilde key (the key above the TAB key) and your mouse pointer instantly becomes a magnifying glass. To turn off the magnifier simply press the tilde key again.