Move and resize windows with ease Important note: Spectacle is no longer being actively maintained Download Spectacle. How to resize an image on a Mac You don’t need to pay for Photoshop or another photo editing app to resize images and make them smaller on a Mac. You can use Preview which comes as part of MacOS. Disk Utility underwent a change when Apple released OS X El Capitan.The new version of Disk Utility is much more colorful and — some say — easier to use. Others say it lost many of the basic capabilities that old Mac hands took for granted. While the user is resizing a window, the delegate is sent a series of window Will Resize(: to:) messages as the window’s outline is dragged. The window’s outline is displayed at the constrained size as set by this method. Download this app from Microsoft Store for Windows 10, Windows 10 Mobile, Windows 10 Team (Surface Hub), HoloLens, Xbox One. See screenshots, read the latest customer reviews, and compare ratings for Resize Image. Your Mac will save the screenshot to your clipboard, and you can import it into Preview with the File New From Clipboard option.) Rotate an Image. Rotating an image is simple. Simply click the rotate button on the toolbar near the top-right of the window one or more times. You can also click the Edit menu and click one of the Rotate or Flip.
Images don’t always come in convenient sizes. Whether you’ve downloaded one from the web or taken one yourself in the hopes of using it for a project, resizing it to fit certain guidelines is often required.
However, aspect ratios are not the only concern. If we want to share the image via email campaign, use it on social media, or include it in a presentation, it needs to be small enough in file size, so it doesn’t create unnecessary problems for other people’s network connections and machines. Try emailing a 50 MB PDF file around the office and see the reaction that follows.
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How can you quickly change the size of an image and optimize it at the same time? Read on in our brief guide for manipulating images on your Mac.
You have two easy options that allow you to resize images on Mac: either using the default Preview app or more advanced PhotoBulk.
Preview is built right into your Mac and mostly used for viewing images. But it’s also a feature-rich tool for manipulating images, including changing their size. Preview lets you control every detail, from the number of pixels to the dimensions in inches. You could also choose to transform the image as a percentage of the original or go completely custom. Finally, the app gives you an option to modify images according to a range of preset sizes, such as 640 x 480 pixels.
Here are the steps to resize an image in Preview:
Now the resized image will show in the Preview window, and you can keep trying out new sizes until you are happy with the end result. Go to File > Save to save the image with the original name or File > Rename if you want to keep the original (useful if you need to keep a high-resolution version) and apply a different name to this copy.
With Preview, you can also change the file format. Under File > Export, you have the following options: PNG, JPEG, JPEG-2000, OpenEXR, PDF, or TIFF. Some of these could potentially improve the quality of the formatting as well.
Bulk resizer for Mac
PhotoBulk is a life-saver for when you need to change the size of multiple images. Drop them into the app and resize in a sec.
Another option is to use PhotoBulk, an image editor designed specifically for bulk resizing, but which can also be used to resize individual images. PhotoBulk puts all of the menu options in one convenient window, along with a real-time preview feature and the option to apply watermarks at the same time.
To resize an image with PhotoBulk:
Sometimes you need to resize multiple images at once. Although probably not your best option, Preview does allow for batch resizing:
The downside of using Preview for batch resizing is that you have to process all the images at the same time. PhotoBulk, on the other hand, provides much more control and the ability to modify the size of individual images without needing to apply those same dimensions to every image:
Overall, whichever option you choose for resizing images, Preview or PhotoBulk, it should now be fairly easy for you to do so. Your best bet is probably to use Preview for single images and PhotoBulk for multiples ones. Just make sure you input the right dimensions and don't forget to save the original if you need to keep a higher resolution version for later. Best of all, PhotoBulk is available for a free trial through Setapp, a platform of over 150 useful apps and utilities for macOS. Another trick up your sleeve.
Meantime, prepare for all the awesome things you can do with Setapp.
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