On the left-hand side menu, click on 'Media' to open the media section.
Select 'Library' to see all the images and files currently on your website.

Choose an Image to Edit. Click on the image or file you want to view or edit.
A new window will appear where you can:
- Edit the image.
- Add or update Alt Text (for accessibility).
- Change the Title, Caption, or Description of the image.

There is no save button. All changes you make will be saved automatically.
Once you’ve finished editing, simply close the window.