Reducing the size of images is many times a necessary phase in the photo editing process. Making your images smaller can help you improve the loading speed of your website or blog, save important storage space on your Mac, as well as share photos online considerably easier.
In order to accomplish this task you don’t really need to resort to a costly and complex software like Photoshop. There are numerous alternatives available that can get the job done in a simpler way and at a fraction of the cost. So keep on reading to discover how to resize images on Mac quickly and efficiently.
Preview
Our first proposal is the built-in Preview app. Before opting for a third-party tool, you can take a look at this free option that comes with your Mac and see if it meets your requirements. Preview is not a benchmark for image editing, but it can be used for various optimization-related operations, such as resizing, cropping, converting or color adjusting.
In order to reduce the size of your files, you need to select them and open them with Preview. Next go in the menu bar to Edit > Select All and then choose Tools > Adjust Size. Now you can either select one of the numerous preset standards or you can customize the values for width and height according to your individual needs. You can also choose the preferred unit of measurement between pixels, percentage, inches, cm, mm or points.
In addition to image editing, you can use Preview to mark up and sign PDF files.
PhotoMarks
PhotoMarks gives you the chance to resize multiple photos at once on Mac in a fast and easy manner. Fast, because the app takes advantage of multi-core processors to accelerate the process. Easy, because the app is designed as a three-step wizard. All you have to do is add your pictures in the first step, apply one of the built-in filters in the second and select your output format and folder in the last.
You can easily adjust the size of your images by manually entering the preferred new dimensions for the width and/or height, expressed in either pixels or percentage. If you constantly need to resize images to the same dimensions, PhotoMarks lets you save your settings as profiles and just load them in future projects. In the same editing session you can insert customizable text and logo watermarks to your pics, convert (there’s RAW support available), rotate and crop, as well as add frames and borders to them.
BatchPhoto Espresso
If you don’t want to install a new app on your Mac, you have the option of resorting to an online tool. BatchPhoto Espresso is a browser-based solution designed to edit multiple images at the same time. The tool comes with an intuitive design and it’s quite simple to use. Load your images in the first phase, apply the desired filters in the second and lastly choose your configuration before downloading the files.
BatchPhoto Espresso gives you the possibility to change photo size in a couple of ways. You can choose one of the preset dimensions, as well as manually insert the desired values for width/height in two units: pixels or percentage. Besides resizing, you can also crop, rotate, rename, convert to various formats and select the quality/size of your pictures. If you want to enhance your images, the tool offers options to adjust the brightness, contrast, hue & saturation, reduce noise and also apply special effects like black and white and sepia.
Pixelmator Pro
Pixelmator Pro is a powerful photo editing tool developed exclusively for Mac users. The app was created to help you retouch and enhance your images in a variety of ways. At the same time it places at your disposal numerous drawing tools so you can create from scratch various graphic design elements, such as buttons, icons or illustrations.
When it comes to making an image smaller, Pixelmator Pro is simple to use. All you have to do is go to Image > Image Size from the Image menu and make the desired adjustments to the width and height. You can use pixels, percentage or print units, such as inches, cm or mm. There are also four scaling algorithms available: Bilinear, Lanczos, Nearest Neighbor and ML Super Resolution. The latter is a machine learning-powered algorithm that makes it possible to enlarge images without affecting the sharpness and details.
Resize Sense
Resize Sense is an app particularly created to resize images on Mac in bulk. This tool stands out through its vast resizing possibilities. You can specify the desired dimensions, fit the original picture inside a box, set the shortest or longest edge, define the file size in bytes or crop photos without resizing them. In case the aspect ratio changes, you can opt to crop, deform or add borders.
In case a photo is too small for the specified size, Resize Sense places at your disposal various options: you can enlarge it, extend the canvas, keep it or just skip it. In addition to reducing file size, you can perform other optimization-related operations in the same session, such as rotating, flipping, cropping or straightening images. To help you improve your workflow, the program lets you save your current configuration and use it in another session.
PhotoJob 3
PhotoJob 3 comes equipped with various editing tools to help you protect, optimize or improve the aspect of your pictures. The app is relatively simple to use thanks to the intuitive interface. On the left side you’ll find the added images, on the right side – the editing options, while in the center of the main window – a large preview area. There’s also a toolbar in the top and bottom sections with useful shortcuts and descriptions.
PhotoJob 3 is designed with numerous resizing options and settings. In that sense you’re free to choose from multiple preset dimensions, resize images to meet social media requirements, to fit to width, height or rectangle, as well as manually introduce the desired values for width/height in pixels, percentage, cm, mm, inches or points. You can also adjust the DPI resolution, enable or prevent image upscaling or apply a sharpen filter. Additionally you can watermark, rotate and convert images and automatically enhance them.
PhotoResize Pro
PhotoResize Pro is a Mac program developed to optimize images in bulk. The app is designed with a single-window interface and makes the editing process clear and straightforward. Just drag and drop your pictures or folder, select one of the available options and then click on the Resize All button.
PhotoResize Pro offers multiple methods to reduce the size of your pictures. You can choose from the numerous preset sizes, type in the new dimensions in diverse units, select to fit to width/height, fit to rectangle, crop to rectangle or stretch to fill rectangle. It’s also possible to maintain or change the DPI resolution. The tool allows you to save your resizing configuration as a new preset and use it later. In the same session you can rename, convert or optimize JPEG/PNG files.
Image Resizer
Image Resizer is a simple solution to reduce image size on your Mac individually or in batches. One of the strong points of the app is its modern, user-friendly interface which ensures an easy and fast editing process. The program is structured in three main tabs: select your photos, choose your resize settings and then your output settings.
Image Resizer offers a couple of useful options to make photos smaller. You can select one of the four predefined sizes or you can manually enter the desired values in either pixels or percentage. At the same time you have options to adjust the image orientation, flip, convert to a common format or rename your pictures.
Batch Image Resizer
Batch Image Resizer is a rather basic, but efficient alternative to change the size of multiple photos simultaneously. This image resizer for Mac comes with a clean, uncomplicated design: drag & drop pictures on the right side of the interface and select your editing settings on the left.
The app lets you set a fixed width or height, as well as scale your images up and down by a specified percentage. If you need to make other types of adjustments, the program gives you the possibility to flip and rotate photos to preset or custom angles, add a transparent border or insert a customizable watermark to them.
Sizerox
Sizerox is a simple solution to optimize photos on Mac. The app makes it possible to resize, crop, rotate, rename or watermark images in a straightforward manner via drag and drop. All you have to is drop your files or an entire folder in the main window and then apply the desired changes.
With Sizerox you have various options to change the size of your pictures. You can customize the dimensions for the width and/or height, as well as choose from the various preset settings. The app allows you to resize by a fixed 4:3 aspect ratio, by percentage or by the longest side and also set the size/quality ratio of your JPEG’s. For improved efficiency, you can save your configuration as a preset and reuse it later.
