A reusable piece of site-wide content
When creating a website page, it’s common to want to add a piece of content that already exists on another page. An example would be a person’s contact details, or an advert that you want to show on every page of your site. Wagtail makes this easy with Snippets.
Creating a snippet allows you to edit your content in one place, and replicate it in different formats across your site. You could have a donate call to action which renders differently depending on the page.
Snippets allows for site-wide flexibility and central control.