If you’ve ever needed to resize or compress an image on your Mac but thought you didn’t have the right software to do so, think again!
Do any of the following to modify the image preview: To change the size of the preview window, drag a corner of the Image Size dialog box and resize it. To view a different area of the image, drag within the preview. To change the preview magnification, Ctrl-click (Windows) or Command-click (Mac OS) in the preview image to increase magnification. Free Image Resizer Software for Mac – iResize. This is one of the most popular free image resizer software applications on Mac. As the name suggests, this software is more suited to Apple devices and has been developed to specially cater to the needs of these devices. Perfectly compatible with Mac.
In a few simple steps, you can easily resize an image, crop a specific focus area of an image, or compress your image. Better yet, you can do all of these tasks without having to download expensive editing software.
We’ll walk you through some simple step-by-step guides on how to edit and compress image files quickly and easily using the Preview application on your Mac.
How to resize an image in the Preview app
First, open Finder on your Mac. In Finder, navigate to the place where your desired image is located (such as Desktop, Downloads, or Recents) and open the image.
The image should open by default in Preview. If it opens in another application instead, you can right-click the image using the mouse (or two-finger click the image on your Mac trackpad) and choose to open it with the Preview application.
Once you’ve opened the image file in Preview, go to the Preview menu on the top left of your screen, select Tools, then Adjust Size. From here, you can resize your image by adjusting its height and width. Check the “Scale Proportionally” box to make sure your image won’t be distorted or skewed after it’s resized.
Right under the image dimensions adjuster, you can find the Resulting Size of your image.
Another useful image editing tool in the Preview application is the Crop feature. This feature allows you to easily select the focus area of an image and crop accordingly.
First, click and drag to select the desired area of your image. A dotted outline will appear to highlight your selection.
From here, you can adjust the dimensions of your final image by clicking and dragging the blue circles until you’re satisfied. Then, go back to Tools and select Crop from the dropdown menu to crop the desired part of the image. (You can also crop an image with the keyboard shortcut Command + K).
This feature is especially useful when you want to change the size of an image without reducing its quality (or just remove a particular area of an image).
Cropping an image, playing a movie, and handling dozens of active apps simultaneously, your Mac may get slow and laggy. Trying to detect heavy consumers and optimize your Mac’s performance manually may take some time. CleanMyMac X is a dedicated Mac cleaner that can speed up your Mac in a couple of seconds. Just start Smart Scan to let CleanMyMac X clear your Mac of junk, determine and terminate conflicting processes. Follow the link to give CleanMyMac X a try.
How to compress an image in the Preview App
Whether you are looking to easily share an image through email or save disk space on your Mac, compressing an image file is a simple way to reduce a file size without sacrificing quality. Compressing an image is also useful when uploading an image somewhere that has a maximum file size limit.
To compress your image, open Preview. Click Open from the Preview menu and choose Open to choose an image you want to compress. Then navigate to the Tools option and select Adjust Size.
At the top of the Adjust Image window, you’ll see the “Fit into” option. The default selection is Custom, but you can select different pixel dimensions from the dropdown list and compress your image. Then take a look at the Resulting Size field to see how your file size has changed.
There’s also another way to compress an image using Preview. But this method affects the quality of your image.
- Open image in Preview.
- Go to the Preview menu and select File.
- Choose Export.
- Change the format of the image to JPEG.
Here you can adjust the quality, which in turn will compress the size of the image.
Locate and remove large and old files
If you’re looking to save additional disk space, check out CleanMyMac X and its Large & Old Files feature. It finds the heaviest files on your Mac or external drives and groups them by kind, size, and access date. This saves you the burden of navigating through endless files and folders—instead, you can decide which files you’d like to remove based on a comprehensively arranged list of files.
If you want a broader perspective, you can go to another tab - Space Lens. It builds a virtual map of your storage, showing the size and location of each file.
To get to use Space Lens and other features of CleanMyMac X:
- Download CleanMyMac X - a free trial is available.
- Install and launch the app.
- Go to Space Lens and press Scan.
Image Resize App For Mac
Once CleanMyMac X shows you all the files you have, you can simply select the ones you don’t need and press Remove.
Hopefully, now you can crop and compress your images. And if you have been hoarding lots of files, decluttering your Mac once in a while is a must, and CleanMyMac X will help you with that. That’s all for today!
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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.
How To Resize Images On 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:
- Open the image you want to modify
- Click on Tools and select Adjust Size
- Now you can adjust the Width, Height, and Resolution
- Once you’ve made those changes, make sure you’ve ticked the “Scale proportionally” box; otherwise you risk an image that is out of proportion and may not look very professional
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:
- Open up the app
- Drag and drop your image onto the window
- Check Resize option from the left-side menu
- Select the type of resizing you need
- Click Start
Resize multiple images at once
Sometimes you need to resize multiple images at once. Although probably not your best option, Preview does allow for batch resizing:
- In the folder with your images, select the ones you need to resize and then right-click on them, and choose Open With > Preview. This will open them all in Preview’s left sidebar.
- Select all the images inside Preview (shortcut: Cmd + A) and then go Tools > Adjust Size, just like in the steps outlined above
- When done, choose to either Save or Rename and then Save
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:
- Drag and drop a bunch of images into PhotoBulk
- Check the Resize box
- Use the dropdown menu to adjust images according to width, height, etc.
- In the same area, you can choose to rename files and their formats, as well as add a watermark if needed
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.
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