The short answer
Organic traffic that leaves costs you nothing. Paid traffic that leaves before the page renders is money already spent for no chance of a result.
That makes landing page speed a direct cost issue rather than a general best practice.
What usually slows a landing page
| Cause | Usual fix |
|---|---|
| Oversized images | Resize and compress properly |
| Tag and tracking scripts | Load after the page renders |
| Web fonts | Fewer weights, show fallback text meanwhile |
| Embedded widgets | Load on interaction, not on arrival |
| Full site template | Use a lighter page for advertising |
The bottom row is the biggest single improvement available for most businesses. An advertising landing page does not need the whole site's navigation, scripts and styling.
Fix in this order
- Images, because they are usually the largest weight.
- Blocking scripts in the head.
- Fonts, which delay visible text.
- Third party widgets.
- Everything else.
Images first almost always. A single unoptimised photograph can outweigh the rest of the page combined.
Test as your visitors arrive
- On a mid-range phone, not a desktop
- On a throttled connection
- From a cold cache, as a first-time visitor
- Following the actual ad link, with its parameters
- With any consent banner in place, because it delays everything
The last point is frequently forgotten during testing and is exactly what real visitors experience first.
Speed is not the only reason people leave
A fast page that does not match what the ad promised loses visitors just as effectively. Fix the speed, then check the page actually answers the click.
The enquiry route should be visible without scrolling on a phone. Paid visitors rarely explore.