This application will let you create thumbnail images for any photos or images. After the thumbnails are created, they are opened with Preview.

First, you will be asked to select images. Next, you can set the size and extension for the thumbnails. After that, the images will be opened with the Preview application.

Automator Workflow

Automator workflow for creating thumbnail images

Step 1:     Ask for Finder Items

  • Prompt: Type the prompt you want for selecting images (for example, "Select image files")
  • Start at: Select the starting folder for locating image files
  • Type: Select Files
  • Check Allow Multiple Selection


Step 2:    Create Thumbnail Images

  • Size: Select the size for each thumbnail image
  • Suffix: Type the file extension you want for each thumbnail image, placing an underscore (_) before the extension (for example, _tn, _jpg, _png)
  • If you want to be able to change the above options when the application runs, check Show this action when the workflow runs


Step 3:    Open Images in Preview (no options)