Many website owners wonder if third‑party scripts, such as the Klar Pixel, can make their pages load more slowly. This article explains how the Klar Pixel works, why its asynchronous loading and CDN delivery keep your site fast, and what you can do if you still experience performance issues.
How the Klar Pixel is loaded
The Klar Pixel is a small JavaScript snippet that tracks visitor interactions. When you add it to your site, the code is fetched from a global Content Delivery Network, not from your own web host.
Asynchronous loading explained
Asynchronous (or “async”) loading means the browser does not wait for the Klar Pixel to finish downloading before it continues rendering the rest of the page. The steps are:
Browser starts loading your own HTML, CSS, and critical JS.
It encounters the Klar Pixel tag, which is marked as async.
The request for the pixel is sent in the background.
Meanwhile, the rest of the page continues to load and become usable.
Because the pixel runs independently, visitors can interact with the site even while the pixel is still being downloaded.
Content Delivery Network (CDN) benefits
Klar serves the pixel through a global CDN. A CDN stores copies of the file on many servers worldwide, so the request is routed to the server that is geographically closest to the visitor. This reduces latency and speeds up delivery.
Faster response times – the file travels a shorter distance.
Higher reliability – if one node fails, another can serve the file.
Load balancing – traffic is spread across many servers, preventing any single point from becoming a bottleneck.
Why the Klar Pixel does not slow down your site
Because the pixel is both async and delivered via a CDN, it typically loads in a few milliseconds and does not block other resources. In most cases, you will not notice any delay caused by the pixel.
Common misconceptions
“The script is large” – The Klar Pixel is intentionally lightweight (under 10 KB).
“Our server is slow, so the pixel must be the cause” – The pixel does not run on your server; it runs on Klar’s infrastructure.
“All third‑party scripts behave the same” – Only scripts that are loaded synchronously can block page rendering.
If you still experience slow loading
Although the Klar Pixel itself is unlikely to be the problem, other factors can affect overall performance. Consider these steps:
Check your own site’s resources
Optimize images and compress files.
Minify CSS and JavaScript.
Use your own CDN for large assets.
Monitor network conditions
Check if visitors are on slow connections (e.g., mobile networks).
Look for patterns such as specific regions experiencing delays.
Getting further help
If you have verified that the Klar Pixel loads correctly but still face performance issues, reach out to our support team. Provide the following information to speed up troubleshooting:
Website domain name.
Time frames when slowness occurs.
Any screenshots of network‑tab warnings or errors.
Our engineers will review the async loading behavior and CDN performance to ensure everything works as expected.