In addition to resize, you can choose to optimize your images, delete or keep only part of the image metadata (can be useful if your phone records image location and you want to share an image online, as well as multiple other privacy uses), change image format, batch-rename, and watermark the image. In the app, all you have to do is drag and drop your batch onto the window and then select your editing options. Now, let’s test multi image resize in PhotoBulk. Note that all images will be saved on top of your existing files, so if you want to only create resized copies, make sure you create copies first. Set your resize settings in the pop-up window and click OK:.Click Tools in the Preview menu bar at the top and pick Adjust Size… option.As you get your images open in Preview, you’ll see one selected image in the center and the rest as thumbnails on the side.Select Open With… and click on Preview.Select all images you want to resize in a Finder folder and right-click on them.Here’s a step-by-step for batch resize there: You can actually batch resize both with Preview or apps like batch editing and watermarking tool PhotoBulk. Resize multiple images at onceīut you don’t have to go resizing your photo collection on Mac one by one. To keep both your original image and the resized (or otherwise edited) one, go to File > Export… and save your changes as a new file. Note that by default, Preview saves all edits in the existing file. In the pop-up window, set your desired image dimensions and click OK: In the Markup mode, click Adjust Size icon:.Find Markup icon in the top menu bar of the Preview window (for narrow images, the icon often hides behind the >.Open an image in Preview (simply double-click on the file to open it and Preview is the default option in most cases).

If you go to Finder > Applications and scroll through the apps, you’ll find Preview, an image viewing and editing app that comes with your Mac.

Macs actually have a built-in image editing software that can resize images on your Mac.

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