How to resize a photo batch for web on Mac
Resize a batch of photos to JPEG at 800×600, avoid enlarging smaller images, and review every destination before you resize.
- What you'll achieve
- You’ll finish with a 15-photo batch set to JPEG at 800×600, smaller originals protected from enlargement, and every output destination checked before resizing.
- What you need
- Photos to resize
- An output folder for the resized files

Bulk Image Resize Studio can prepare a group of photos for web use in one pass. This guide follows the app’s first Store journey: import 15 photos, choose JPEG, use the Medium 800×600 preset, prevent upscaling, and confirm the output plan.
1.Import the photo batch
Use Add images to import the photos you want to resize. Confirm the Queue shows all 15 images before you continue.

Bulk Image Resize Studio with a 15-photo queue ready for resize 2.Choose JPEG output
Set Output Format to JPEG. The batch output updates to JPG at the current quality setting.

Bulk Image Resize Studio with JPEG output selected for the photo batch 3.Set the Medium size preset
Choose Medium from Preset. The target dimensions change to 800 × 600 pixels for the batch.

Bulk Image Resize Studio with the Medium preset set to 800 by 600 pixels 4.Protect smaller originals
Turn on Don't Enlarge Smaller Images so photos already below the target dimensions are not enlarged.

Bulk Image Resize Studio with Don't Enlarge Smaller Images enabled 5.Choose the output folder
Click Choose Output Folder and select where the resized files should go. This capture uses the Resized Photos folder.

Bulk Image Resize Studio with Resized Photos selected as the output folder 6.Refresh and review the output plan
Click Refresh to recalculate the plan. Confirm the Plan Ready summary shows 15 images going to Resized Photos before resizing.

Bulk Image Resize Studio showing Plan Ready for 15 images going to Resized Photos
Tips
After changing settings or the output folder, use Refresh so the plan reflects the current batch.
Check the Plan Ready summary for the image count and destination before you resize.
Watch outIf Don't Enlarge Smaller Images is off, photos below the target dimensions can be enlarged toward the selected size.