Step 1: Right-click on the folder of images you want to compress. You’ll need to consolidate the photos that you want to compress in a single folder. If you have not been regularly organizing your photos, you’re going to have to start now. Great job, because you have saved yourself a lot of unnecessary work. You probably categorize your folders in some order so that you can easily locate certain photos. Method 2: Compress a Folder of Photos into a ZIP File Note: input a smaller value first and then below the input, you will be able to see how much the image has been reduced as well as the final file size.

Step 2: Go to Tools section which is located in the menu bar on the top of your screen. Step 1: Open the file you want to change via Preview app. Through Preview, you can reduce the file size of almost any photo. Preview is an application that is built into every Mac. 5 Ways to Compress Photos on Mac Method 1: Using Preview to Compress One Photo So, how do you safely compress your photos without losing image quality? Let’s find out. Some people turn to online image optimizer websites to reduce the size of an image, but you can never be sure that the website is safe and that they will handle your image responsibly. Therefore, if you intend to enlarge a photo or print it at a later stage, do not compress it. More often than not, the quality of the image is compromised when reducing the file size because you lose some photo data. PNGs are lossless and it is good for line-art and images with more text and fewer colors. JPEGs are lossy and good for photos and realistic images. Lossless compression means that the image quality is retained, while lossy compression means you lose some of the photo data.Ĭhanging the file type can affect the image quality and compression, so make sure you know which file type to use. There are several important things you should know about compressing photos.įirstly, there are two types of compression: lossless and lossy compression. Method 5: Use a Third-party Image Optimization App.Method 4: Compress Photos in a Word Document.Method 3: Using iPhoto/Photos to Compress an Album.Method 2: Compress a Folder of Photos into a ZIP File.Method 1: Using Preview to Compress One Photo.Compressing Photos: What You Should Know.

Change picture size mac