How To Fix Quickly Resize Multiple Images At Once On Mac, IPhone

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Resizing Multiple Images on Mac

Resizing multiple images at once on a Mac is a straightforward process that can be accomplished using the built-in Preview app. Here’s a step-by-step guide to help you quickly resize multiple images.

Using Preview to Resize Multiple Images

  1. Select the Images:

    • Open the Finder and navigate to the folder containing the images you want to resize.
    • Select all the images by holding down the Command key and clicking on each image, or simply select one image and then press Command + A to select all images in the folder.

  2. Open with Preview:

    • Right-click on the selected images and choose Open With > Preview.

  3. Select All Images in Preview:

  • Once the images are open in Preview, you will see one image in the center and the rest as thumbnails on the side. Press Command + A to select all the thumbnails.

  1. Adjust the Size:

    • Go to the Tools menu in the Preview menu bar and select Adjust Size….
    • In the pop-up window, set your desired dimensions. You can resize by pixels, inches, cm, mm, percentage, or points. Make sure to select Scale Proportionally if you want to maintain the aspect ratio.

  2. Save the Resized Images:

    • Click OK to apply the changes. The images will be resized and saved, replacing the original files. If you want to keep the original files, make sure to create copies before resizing.

Alternative Methods for Resizing Images

Using PhotoBulk for Advanced Features

If you need more advanced features such as watermarking, optimizing, or batch-renaming images, you can use PhotoBulk:

  • Drag and Drop Images:

    • Open PhotoBulk and drag the images you want to resize into the application window.

  • Set Resize Options:

    • Choose your resize settings and any additional options like watermarking or optimizing images.

  • Save the Resized Images:

  • Apply the changes and save the resized images to your desired location.

Using Terminal with ImageMagick

For those comfortable with the terminal, you can use ImageMagick to resize multiple images:

  • Install ImageMagick:

    • If you haven’t already, install ImageMagick using Homebrew by running brew install imagemagick in your terminal.

  • Resize Images:

    • Navigate to the directory containing your images and use the command mogrify -path output -resize 750 *.jpeg to resize all JPEG images to 750 pixels wide, keeping the aspect ratio.

Resizing Images on iPhone

While the iPhone does not have a built-in feature to batch resize images, you can use third-party apps to achieve this:

Using Third-Party Apps

  1. Download a Resizing App:

    • Go to the App Store and download an image resizing app such as Photo Resizer or Resize Image.

  2. Select Images:

    • Open the app and select the images you want to resize from your Photos library.

  3. Set Resize Options:

  • Choose your desired dimensions and any additional options the app may offer.
  1. Save the Resized Images:
    • Apply the changes and save the resized images back to your Photos library or share them directly.

Using Online Tools

If you prefer not to download an app, you can use online tools to resize images:

  1. Upload Images:

    • Go to an online image resizing tool like iLoveImg.com and upload the images you want to resize.

  2. Set Resize Options:

    • Choose your desired dimensions and apply any additional settings.

  3. Download the Resized Images:

  • Download the resized images to your iPhone. Note that uploading sensitive information to online sites should be done cautiously.

By following these steps, you can quickly and efficiently resize multiple images on both your Mac and iPhone, making it easier to manage and share your photos.

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