# Interact with an overlay extension?

**URL:** <https://discuss.dev.twitch.com/t/interact-with-an-overlay-extension/35698>\
**Category:** Extensions\
**Created:** [December 28, 2021, 12:57pm UTC](https://discuss.dev.twitch.com/t/interact-with-an-overlay-extension/35698 "2021-12-28T12:57:55Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![BarryCarlyon](https://d3ovvz0v2ajtpu.cloudfront.net/user_avatar/discuss.dev.twitch.com/barrycarlyon/32/253_2.png) [@BarryCarlyon](https://discuss.dev.twitch.com/u/BarryCarlyon)\
**Post date:** [December 28, 2021, 2:15pm UTC](https://discuss.dev.twitch.com/t/interact-with-an-overlay-extension/35698/2 "2021-12-28T14:15:36Z")

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> [@alexL](#):
>
> Are there any differences between overlay, component or panel extensions (except the placement)?

Dimensions and placement really.  
Overlay has some extra things to consider like, you need a transparent background for msot of the stream so viewers can see the stream/you don’t cover the whole thing, but that might make sense anyway depending on the use case

> [@alexL](#):
>
> Is it possible to interact with every type of extension?

Not sure what you are asking here.

A given extension can be active in a single slot _only_ (mobile is always the same slot regardless of the desktop slot).

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