Article: Click the Preview app icon, which resembles a magnifier on top of a couple of photos, in your Mac's Dock. If Preview isn't in your Mac's Dock, type preview into Spotlight {"smallUrl":"https:\/\/www.wikihow.com\/images\/e\/ea\/Macspotlight.png","bigUrl":"\/images\/thumb\/e\/ea\/Macspotlight.png\/30px-Macspotlight.png","smallWidth":460,"smallHeight":460,"bigWidth":"30","bigHeight":"30","licensing":"<div class=\"mw-parser-output\"><p>I edited this screenshot of a Mac icon.\n<\/p><p>License: <a rel=\"nofollow\" class=\"external text\" href=\"http:\/\/en.wikipedia.org\/wiki\/Fair_use\">Fair Use<\/a><br>\n<\/p><\/div>"} and then double-click Preview in the results. In the file selection window that opens, go to the folder in which your picture is located, then click the picture in question to select it. You can select more than one picture by holding down ⌘ Command and clicking each picture that you want to use. It's in the lower-right side of the window. Doing so opens your photos in Preview. This menu item is in the upper-left corner of your Mac's screen. Clicking it prompts a drop-down menu to appear. If you want to rearrange your pictures' order, first do so by dragging them up or down in the left-hand sidebar. You'll find it near the bottom of the File drop-down menu. It's in the bottom-left corner of the window. A drop-down menu will appear. If you need to change any print settings (e.g., photo orientation), first click Show Details at the bottom of the window and select your preferred settings. This option is in the drop-down menu. Doing so will open a window for you to save your picture(s) as a PDF file. Type the name of your PDF into the "Title" text field. On the left side of the window, click a folder (e.g., Desktop) in which to save your PDF. It's in the bottom-right corner of the window. Doing so will save your PDF.

What is a summary?
Open Preview. Select a picture to convert. Click Open. Click File. Click Print…. Click the PDF drop-down box. Click Save as PDF. Enter a file name. Select a save location if needed. Click Save.