1. Log in to your Website Admin (click here to learn how).

2. Navigate to your Media Archive

3. Click the "+" beside "Media Archive", expand the folder with your website's name (usually this will just be your name) and navigate until you find the desired image. Select the image and then the "File Properties" option in the top menu. 

4. Update title, description and tag fields as desired:

5. Remember to "Save" when you're finished with your changes.