# Pop-under ad: what it is and how it works · Zorraquino
> A pop-under is a window that opens behind the active browser window, usually containing advertising.
URL: https://www.zorraquino.com/en/dictionary/advertising/pop-under.html

# Pop-under ad

A pop-under is a window that opens behind the active browser window, usually containing advertising. It may become visible when the main window is closed or minimised

What it means, how it is used and where it comes up, with its related concepts.

[The whole glossary](https://www.zorraquino.com/en/dictionary)

## What it is and how it works

It is retained as a reference to web advertising formats. Its position among [browser](https://www.zorraquino.com/en/dictionary/internet/web-browser.html) windows does not prevent it from being intrusive or making it difficult to identify which site generated it. For current communications, the proposed approach is to use identifiable, controllable spaces and avoid opening unexpected windows as a retention mechanism.

Also known as

Pop-under, Popunder

Topics

[Marketing and sales](https://www.zorraquino.com/en/dictionary/category/marketing-y-ventas)

## Related concepts

- [Pop-up](https://www.zorraquino.com/en/dictionary/advertising/pop-up.html)
- [Floating ad formats](https://www.zorraquino.com/en/dictionary/advertising/floating-formats.html)
- [Ad blocking](https://www.zorraquino.com/en/dictionary/advertising/ad-blocking.html)