Mac users who want to convert a photo to a PDF don't need to use an online tool or third-party software. The inbuilt Preview app will do the job.
Mac users who want to convert image files to PDFs don't need to use online tools or third-party PDF editors and can rely on the inbuilt Preview app instead. Preview is part of macOS and is the default app for opening images and PDF files on a Mac. While the app may appear basic, Apple has added enough features to make it a complete editing tool for photos and PDFs.
There are several reasons why a user might need to convert an image to a PDF. In some cases, a scanner or scanning app might have saved a document as a JPEG instead of PDF format. In other instances, users might take a photo of a document with their phone but will need to convert it to PDF if they're submitting an online form or application. Converting images to PDFs can also make it easy to share a photo album since a PDF file can have multiple pages. This also makes it easier to share photos over email, given that a PDF file is smaller in size than a JPEG.
One of the most useful features of Preview is the ability to convert photos to a range of image formats or PDF. To turn a photo into a PDF, open it with Preview. From the menu bar on top, click on File, and then Export. Click on the Format dropdown menu and select PDF from the list. Modify the file name in the window if needed, choose the destination to save the file, and click on Save. The image will now be saved as a PDF. Preview also lets users apply Quartz filters to a PDF file, which enhances it with colors or effects. For example, users can make a PDF black and white, increase or decrease the lightness, add a sepia, blue or gray tone, or even reduce the PDF file size. The latter is particularly useful when converting a large image file to PDF. To add any of these effects, use the Quartz filter dropdown when exporting an image to PDF in Preview.
Preview also lets users batch convert images to PDF, provided they're all in the same format. For example, all the images will need to be either JPEG or PNG files for this method to work. To batch convert images, hold down the Command key, select all the images which need to be converted and open them in Preview. They should open in a single window. Click on the View button at the top of the window and on Thumbnails. Select all the thumbnails (use the Command+A shortcut), click on File, and then Export Selected Images. In the window that opens, click on Options. Select PDF as the format option, and then tap on Choose. The images will be saved as individual PDFs in the selected location.
Apart from converting files, Preview also offers several tools for editing PDFs. Among these is the ability to fill out PDF forms and annotate them with a signature. Text can be added and formatted by highlighting, underlining, or striking out. Users can also combine multiple PDFs into one, split one PDF into different files, or delete pages from a PDF document. It's also possible to add a password to a PDF or compress its file size. With so many inbuilt features available, most Mac users might not even need to download third-party PDF software like Adobe Acrobat.
Source: Apple
