If a content type offers you the ability to upload an image--specifically outside of the WYSIWYG add image option--you will have the option to upload more than one image at a time, making the process more efficient.

How to upload multiple images
- From an Add a new file section of a content type, click the Choose Files button.
- When the browser window opens:
- On a Windows platform: click on your first file and then use Ctrl+click to select files in any position in the list or Shift+click on the last file of a list of several files in a row that you want to include.
- On a Mac platform: click on your first file and then use Command+click to select files in any position in the list; or Shift+click on the last file of a list of several files in a row that you want to include.
- Click OK or Open to proceed.
- Your files will upload and, when complete, will require you to provide Alternative (alt) text for each one before you will be able to save.