Image Galleries are deprecated and will not be supported in future Umbraco-based websites. If your site has a pre-existing Image Gallery and you need help with maintenance, please email CMS Desk.
If you have a large set of photos, you should first consider adding these to your social media pages. While it was possible to create an Image Gallery page in Umbraco, our website traffic reports consistently showed little to no activity on Image Gallery pages. Adding them to social media pages is most effective for these images and audiences are much more likely to actively engage them. It not only provides opportunity to direct more traffic to your website, but also gives our website analytics system more data when people come to the website from social media. To discuss what avenue is right for your photo gallery, contact David Ryan.