By default, Google Chrome blocks pop-ups from automatically showing up on your screen. When a pop-up is blocked, the address bar will be marked Pop-up blocked A popup (or pop-up) is a graphical user interface (GUI) element that appears suddenly on a website or digital screen, usually as a window or overlay on top of the page. It is designed to draw a visitor's attention and encourage an interaction, such as subscribing, purchasing, or engaging with a message. Because there are so many pop-up ads on the web, most web browsers block pop-ups by default. This is usually helpful, as it keeps distractions to a minimum, but sometimes you need to see or interact with a pop-up to use the features of a website. You can block pop-ups from the settings in Google Chrome, Firefox, Microsoft Edge, Internet Explorer, and Safari, and you can download a mobile app for your iPhone or Android in order to block most pop-up ads. Taste the best bagels in town — baked fresh daily and paired with handcrafted schmears. Order, pre-order, or find a PopUp Bagels location near you for hot, flavorful bites on the go. The meaning of POP-UP is pop fly. How to use pop-up in a sentence. Learn how to create popups with CSS and JavaScript. Click me to toggle the popup! A Simple Popup! Try it Yourself » There are many different types of pop-ups, including advertisements, notices, offers, or alerts that can appear at various times on any web page. Some can be helpful, such as when a bank website displays your monthly statement in a pop-up window. There are many different types of pop-ups, including advertisements, notices, offers, or alerts that can appear at various times on any web page. Some can be helpful, such as when a bank website displays your monthly statement in a pop-up window. Pop-up ads or pop-ups are forms of online advertising on the World Wide Web. A pop-up is a graphical user interface (GUI) display area, usually a small window, that suddenly appears ( pops up ) in the foreground of the visual interface.