| rich results test tool | A tool released by Google in January 2019 allows users to preview how rich results will be shown in search results and edit code. |
| subscriber | A subscriber is a visitor that has opted-in or consented to have a business contact them. They can be added to email lists and SMS lists, and the business can then send out messages with the purpose of converting the subscribers to paying customers. |
| whois privacy | Whois Privacy is hiding the name and contact details of a web domain owner. Google considers Whois Privacy a way of having to hide something. For example, Private Blog Network owners might want to hide their names so that their networks wont be found. |
| srcset | Like responsive design for images, SRCSET indicates which version of the image to show for different situations. |
| panda algorithm update | the first of the big Google updates, Panda categorises websites into buckets based on their perceived quality. |
