LinkedIn Ads: impact on page speed
Category: Advertising pixel
The LinkedIn Insight Tag tracks conversions and builds audiences for LinkedIn campaigns. It is common on B2B sites and usually installed site-wide.
On 1.6 % of the 4108 homepages measured, LinkedIn Ads is among the five heaviest third parties. Where it is, it takes a median of 23 ms of main-thread time; on the heaviest quarter of those sites it takes 30 ms or more.
1.6 %
of homepages: among the five heaviest third parties
23 ms
median main-thread time
30 ms
main-thread time on the heaviest quarter (p75)
25 KB
median transfer size
Distribution across homepages
Percentiles across 66 homepages with LinkedIn Ads.
| Percentile | Main-thread time | Transfer size |
|---|---|---|
| p25 |
19 ms
|
23 KB |
| Median |
23 ms
|
25 KB |
| p75 |
30 ms
|
29 KB |
| p90 |
43 ms
|
33 KB |
In context
By median main-thread time, LinkedIn Ads ranks 56th of 65 third parties in the benchmark, lighter than Cloudflare CDN and heavier than Cloudflare.
On 0.0 % of the homepages where it appears, LinkedIn Ads alone uses 250 milliseconds of main-thread time or more, the mark from which Lighthouse flags third-party code.
Homepages with LinkedIn Ads weigh 4.1 MB at the median (JavaScript: 1.6 MB), homepages without it 4.3 MB (JavaScript: 1.6 MB).
Often loaded together with
Share of homepages with LinkedIn Ads where the other tool is also among the five heaviest third parties.
- Google Tag Manager 89 %
- Facebook 61 %
- Clarity 18 %
How to spot LinkedIn Ads on your page
The Insight Tag loads from snap.licdn.com and reports to px.ads.linkedin.com. Because B2B sites often run LinkedIn alongside Google Ads, Meta and a CRM tracker, its cost rarely stands alone; it is one of several pixels competing for the main thread after load. Consolidating these pixels behind a single consent-aware loading point usually saves more than tuning any one of them.
How to reduce the impact of LinkedIn Ads
- Load the Insight Tag only after consent and after page load.
- Use the LinkedIn Conversions API for server-side conversion tracking.
- Remove the tag from sites or sections that no campaign targets.
Frequently asked questions
How can I load LinkedIn Ads with less impact?
Load the Insight Tag only after consent and after page load. Use the LinkedIn Conversions API for server-side conversion tracking.
Does LinkedIn Ads affect Core Web Vitals?
The LinkedIn Insight Tag mainly affects INP on B2B sites. It is loaded on every page to build audiences, runs its script during page load and reports conversions on clicks. It does not render anything, so LCP and CLS stay untouched unless the tag is placed synchronously before the main content.
Method and sample: Third-Party Benchmark.