How to check your LinkedIn Insight Tag is working

The LinkedIn Insight Tag works if the browser loads insight.min.js and sends a request to px.ads.linkedin.com/collect with pid set to your partner ID. Conversions set up as events show as a request with a conversionId; URL-based conversions are matched by LinkedIn on its side, so you only see the page view.

Skip the DevTools: the free scan loads your page in a real browser, accepts and rejects the cookie banner, and shows what the LinkedIn Insight Tag actually sent.

At a glance

Tag script: snap.licdn.com/li.lms-analytics/insight.min.js
Event request: px.ads.linkedin.com/collect?pid=<partner ID>…; event conversions add conversionId=
Partner ID: A number, usually 6 to 8 digits
Click ID: li_fat_id, when "enhanced conversion tracking" (first-party cookie) is on in Campaign Manager
Consent: No built-in consent API: load the tag through your consent tool

Check it yourself in two minutes

Open DevTools on the Network tab and filter on linkedin. Accept the banner and load a page.
You should see insight.min.js and then a request to px.ads.linkedin.com/collect. Check pid is the partner ID shown with your Insight Tag in Campaign Manager.
For event-specific conversions (a form submit, a demo booking), trigger the action and look for a request with conversionId= matching the conversion in Campaign Manager.
Campaign Manager shows the tag as Active once it has received data, which can take up to a day, so the Network tab is the faster check.

Why the LinkedIn Insight Tag breaks, and how to fix it

Event conversion never sent because the page moves on

Event-specific conversions are sent with lintrk when something happens on the page:

window.lintrk('track', { conversion_id: 1234567 });

If that runs on a form's submit button and the browser leaves the page straight away, the request is cancelled. In the Network tab it shows as "(canceled)" or not at all. Fire it on the thank-you page instead, or after the form's success response.

The tag is missing where the conversion happens

URL-based conversions need the Insight Tag on the thank-you page itself. Forms hosted elsewhere (HubSpot, Typeform, Calendly, a separate booking domain) often end on a page without the tag, so LinkedIn never sees the conversion. Add the tag there, or use an event conversion on your own page.

Enhanced conversion tracking is off

LinkedIn appends li_fat_id to ad clicks only when the first-party cookie option is enabled for the Insight Tag. Without it, attribution relies on third-party cookies, which Safari and Firefox block. Turn it on in Campaign Manager and check the parameter survives your redirects with the click ID redirect tester.

The tag loads before consent

The Insight Tag sets cookies as soon as it loads and has no consent switch of its own, so it must only load after the visitor accepts marketing cookies. A tag pasted into the site footer, or a GTM tag without a consent condition, bypasses the banner. See Ad pixel fires before consent or after "reject".

What the free scan checks

LinkedIn Insight Tag loads, and sends at least a page view
Only one LinkedIn Insight ID, or a warning if there are more
LinkedIn Insight Tag waits until the visitor accepts cookies
LinkedIn Insight Tag stops after the visitor clicks "reject all"
No email addresses in plain text in LinkedIn Insight Tag requests
The li_fat_id click ID survives your redirects

Server-side events (Conversions APIs, server-side tagging) are invisible to a public scan, so the report never marks them as working or broken.

Sources

Updated 2026-10-27. Based on the platforms' public documentation and the requests their public tags make; menus and names change, so check the linked pages if a step looks different.