Creator’s website: WordPress.com
Before the introduction of Patterns, Publish.illinois.edu offered a plugin called Post Snippets which offered similar functionality. However, since the introduction of Patterns in WordPress core, we encourage Block Editor users to use Patterns instead.
To use a Pattern (your own or someone else’s):
In the Block Editor, begin to insert a new block, then click Browse All.
In the sidebar that appears, change from the Block tab to the Pattern tab:

Choose your desired pattern from the list. However, since not all WordPress-provided patterns have been checked for accessibility, we recommend you check any third-party patterns you use.
To create a pattern of your own:
- In the Block editor, select the elements you would like to reuse.
- Right-click on them and select the three vertical dot icon that represents Options.
- Scroll through the Options menu until you see Create Pattern, then select it.

Then give your new pattern a name, any categories you like, and choose whether this pattern should be synced (identical) in multiple locations within this website or not. (It will not automatically be copied to your other PIE or non-PIE WordPress sites. ‘Sync’ means ‘locally’ here.)
Patterns you create will be available under “My Patterns” in the Patterns listing shown above.