A visual layer that sits on top of the rest of the interface, temporarily covering part or all of it to show something like a message, menu, or pop-up until the user deals with it.
Synonyms
- overlay layer
Related terms
In plain words
- a layer that appears on top of the screen
- the thing that floats above the page
Usage example
Tapping the photo opens an overlay showing a larger version.
Don't confuse with…
- modalA modal is one kind of overlay that also blocks the page behind it; not every overlay blocks interaction.
Categories
- Overlays & containers