how to get the most out of apple's macos preview app

All of Apple's Macs come with Preview, feature that's built into macOS.   Preview is the app that opens up and it has quite few useful tools built into it.   To access these tools, select Markup icon ...   From here, you can sign using your trackpad, or sign white piece of paper with pen and then hold it up to your Mac's camera.   there's quick way to do so, in detail in the video above.   Using the Edit options in the bar, select Insert --> Page from File to add new document to PDF.   With the Thumbnails showing in the Sidebar, drag another PDF from the Finder to the desired location..   Select JPEGs in the Finder and use CMD-O to open all of them in single document, one image per page..   One other trick you can do import of handful of images straight into Preview.   On El Cpaitan, zooming in to PDFs too far causes them to go blank, and the pixelated re-rendering problem is just as prevalent on Sierra, so upgrading did not fix much..   Read more