💡 Interaction to Next Paint metrics

[wylieconlon]

The Interaction to Next Paint metric is a missing part of the Datadog web vitals tracking. Ideally, it would be tracked automatically.

Describe alternatives you've considered

This can be implemented as a custom metric using a snippet such as this:

import { onINP } from "web-vitals/attribution";

onINP(
  (metric) => {
    return datadogRum.addAction("web-vitals.onINP", {
      ...metric,
      duration: metric.value,
    });
  },
  {
    reportAllChanges: true,
  },
);

[amortemousque]

Hello @wylieconlon,
Thanks for the feedback. It's on our radar, but hasn't been prioritised yet. We will keep you updated.

[RyanMulready]

Any update here? We started getting search console warnings about this new metric. Would love to start collecting data in Datadog.

[cy4n]

i would also love to see this metric sooner than later.
Google will use the INP metric for their SEO placements from 03/2024, but website providers will need time ahead to actually monitor this metric and fix issues this creates.
(and web vitals monitoring is a major selling point of DD RUM)

per the custom metric the OP stated: as a customer, my main concern using a SaaS service is NOT building stuff myself

[KempfCreative]

We are starting to prioritize this metric over FID and would appreciate a timeline for implementation. This will be a sticky metric to fix, which is especially dependent on RUM to understand the gaps.

[nhientrandatadog]

Hi everyone, thanks for your feedback. This has been prioritized for implementation, targeting early Q4 for it to be available in Datadog RUM. Stay tuned for updates.

[cy4n]

early Q4 which year? SCNR

[imteekay]

Apparently, this was first implemented a couple of months ago #2355 but it was running as an "experiment". After a couple of fixes, I saw a new PR removing this experiment 5 days ago #2448 and it released the change in v5.1.0.

Is it ok to assume that from v5.1.0, we'll have INP being collected automatically on datadog?

Edit: I bumped to the last version and it worked 🎉

[amortemousque]

Hello everyone,
Yes, the core web vital Interaction To Next Paint (INP) is officially available since v5.1.0!

[ischell]

This is great to see! I know that when we get this out and see high values, one of the first questions is going to be how to track down the source of the long interactions. Can you share any plans you have around collecting and exposing the recommended INP contextual info referenced here? https://web.dev/articles/find-slow-interactions-in-the-field#what_you_should_collect_in_the_field_and_why

[amortemousque]

Hello @ischell,
Yes this is something we have in mind and we are currently working on collecting the target element attributed to the Core Web Vitals, including INP.

[amortemousque]

Hello everyone,
We now collect the Core Web Vital selectors (including the INP selector) since the RUM browser SDK v5.4.0. It is visible in the Datadog UI