If you want to add an alt tag to an image in Photoshop, there are a few steps you need to take. First, open the Image Editor and select the Image option from the menu. Then, click on the Add New Tag button and enter a name for your new tag. For this example, we will call our new tag “alt_image.” Next, click on the OK button to close the Image Editor and return to Photoshop. Now, open up your image again and select the Edit tab from the menu. Underneath the Tags section, you will see a list of all of Photoshop’s tags. Choose alt_image from this list and click on it to add it to your image. Now that your image has a new alt_image tag added, you can use it in any document or project that uses Photoshop.