Hello @Robin5 , welcome and thank you for joining the GoDaddy community. By default, Website Builder uses the photo's file name as the title, but you can edit it at any time. You can also add and edit a photo caption. Please follow this guide to resolve your issue.
It will depend on the theme selections you've chosen for WordPress. You can take a look at this search return in this WordPress forum and see if any of the situations resemble the problem you're having.
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