Media (like images, PDFs, documents and spreadsheets
Profiles
Resource tiles
Changing a reusable component changes it everywhere
Reusable components are stored in the SF.gov database, and can be added to any number of pages on SF.gov. When the component is changed from any page, it changes everywhere else it is used.
For example, addresses are a reusable component. When an address changes, you can update the address component, and it will update on each page. You do not need to find and update every page that has the address.
Non-reusable components
Many components are not reusable across pages. These include: