Performance when using multiple FireBox campaigns

It’s common to wonder whether having multiple popup campaigns on a page can affect site performance. In most cases, the answer is no, and here’s why.

How FireBox works

FireBox loads campaigns conditionally. A campaign is only evaluated and rendered when its Display Conditions match the current page. Campaigns that are not meant to appear on a page do not actively render content or interact with the visitor.

Because of this, simply having many campaigns created in FireBox does not automatically slow down your site.

What can impact performance

Performance impact is usually related to the content within a campaign, not to the number of campaigns. Examples include:

• Embedded videos (YouTube, Vimeo, self-hosted)
• Large images or background images
• Heavy custom HTML, CSS, or JavaScript
• Third-party scripts loaded inside popups

When multiple campaigns containing heavy content are set to appear on the same page, the browser has more work to do, which can result in slower load times.

Best practices

To keep your site fast:

• Use Display Conditions to show campaigns only where they’re needed
• Avoid showing multiple heavy campaigns on the same page
• Lazy-load or defer media content where possible
• Keep popup content focused and lightweight

Is this a FireBox issue?

No. FireBox is built to be lightweight and follow best practices so that it won’t slow your site down on its own. Campaigns load only when needed, avoiding unnecessary slowdowns.

However, there is a limit to how much any tool can optimize performance. If you add heavy content inside a popup, like videos, large images, or external scripts, the browser still has to load them.

So while FireBox itself stays fast, your site’s speed also depends on what you put inside your popups and where they appear.

If you’re not sure what’s causing a slowdown, checking your popup content and display rules usually solves it quickly.

If needed, our team can help review your setup and suggest improvements.