Description
The Countdown Popup Ad Script is a lightweight, responsive, and customizable popup window built with pure HTML, CSS, and JavaScript. It displays an image, banner, or promotional content overlaying the entire webpage while dimming the background for maximum attention.
A countdown timer prevents the popup from being closed instantly — encouraging visitors to view your ad or image for a set duration. Once the timer reaches zero, the “Close” button becomes clickable, and users can dismiss the popup smoothly.
This script is perfect for advertisements, announcements, email subscriptions, affiliate promotions, or offers that require user attention before proceeding. Its design ensures easy customization — you can replace the image, timer, colors, and dimensions to match your brand or layout style.









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