How do I Convert Multiple PNG to JPG on Mac?

Sometimes, you find yourself with a bunch of PNG images that need converting to JPG, especially when file size or compatibility becomes an issue. Luckily, if you’re using a Mac, you’ve got several free ways to batch convert these images without downloading extra software. Below are three simple methods based on real experience!

1. Using Preview (Built-in Tool)

Mac’s Preview app is an underrated gem. Not only can you view images, but you can also convert and export them into different formats. Here’s how you do it:

  • Step 1: Open all the PNG files you want to convert by selecting them and right-clicking, then choose Open with Preview.
  • Step 2: Once all images are open in Preview, press Cmd + A to select them all.
  • Step 3: Click on File in the top menu, then choose Export Selected Images.
  • Step 4: In the new window, choose JPEG from the format dropdown and select where you want to save the converted files.

It’s that easy! This method is perfect for quick conversions without needing third-party tools.

2. Using Automator (Automated Solution)

If you often need to batch convert images, Automator can save you tons of time by automating the process. It’s a built-in app on macOS that allows you to create workflows to simplify repetitive tasks.

  • Step 1: Open Automator from Applications.
  • Step 2: Choose New Document and select Quick Action.
  • Step 3: In the Library on the left, search for Get Specified Finder Items and drag it to the workflow pane.
  • Step 4: Next, search for Change Type of Images and add it to the workflow.
  • Step 5: Select JPEG as the output format.
  • Step 6: Save your workflow and run it by right-clicking your selected PNG images in Finder, then selecting your new workflow.

This method is excellent for handling large batches of files, and once set up, it’s a breeze to run again in the future.

3. Using Terminal (Quick and Efficient)

For those who prefer the power of the command line, the sips (scriptable image processing system) command in Terminal is a great tool to convert images quickly.

  • Step 1: Open Terminal.
  • Step 2: Navigate to the folder containing the PNG files you want to convert by using the cd command. For example:
cd /path/to/your/images
Step 3: Run the following command to convert all PNG files in the folder to JPG:
sips -s format jpeg *.png --out /path/to/output/folder

This will convert all PNG files in the current directory and save the JPG versions in the specified output folder. It’s a fast and efficient way to handle bulk conversions with just a few keystrokes.

Final Thoughts

Whether you’re looking for a quick one-off conversion or want a more automated solution, these three methods give you the flexibility to convert multiple PNGs to JPGs on your Mac without spending a cent. Preview is great for smaller batches, Automator is a lifesaver for recurring tasks, and Terminal is perfect for power users who like to get things done with a few commands. Happy converting!