Web performance analytics with receipts

Real User Monitoring (RUM) that traces every Core Web Vital back to the exact DOM elements and scripts involved.

Check my site's Core Web Vitals Start a 14 day free trial

Fix Issues Faster

The 🔎 for Core Web Vitals

Everything you need to start fixing the cause of the poor Core Web Vitals scores reported to Google. No more guessing and no more wasted developer hours.

Cumulative Layout Shift.: See the exact element and shift that caused a high CLS score. Was the user scrolled? What were their screen dimensions?
Largest Contentful Paint.: Instant access to the position and selector of the LCP element of real user navigations, as well as resource timings for images/videos that register as LCP.
Interaction to Next Paint.: Captures the JavaScript entry points executing during slow interactions, and the exact element interaction that triggered the lengthy timing.

Real UX data, instantly.

Get the metrics and metadata you need to fix your Core Web Vitals issues immediately.

How it works

Deploy a snippet, get your biggest issues by lunch.

No build step, no tag manager rules, no sampling config. Deploy the snippet and RumDash ranks what slows your real visitors down, so you always know what to fix next.

Deploy your RumDash snippet

<script>
  function __rdOnLoad() {
    RumDash.init({
      key: "YOUR_API_KEY",
      env: "prod",
    })
  }
</script>
<script defer src="https://cdn.rumdash.io/client.js"></script>

2
Real traffic reveals your biggest bottlenecks

RumDash ranks the pages, elements, requests, and scripts that impact your site the most.
3
Ship the fix

Watch your real user data confirm the improvement.

“We strongly recommend that sites set up their own real-user monitoring.”

Built by performance people

A monitoring script that doesn't hurt the metrics it measures.

Most analytics tags cost you the very Core Web Vitals you're trying to improve. Ours stays out of the way.

Compressed size: <11 KB
the size of Datadog's "slim" RUM script: 1/5th
Work deferred until the browser is idle: Unobtrusive

Works wherever your users are:

Holger Sindbæk

Founder & CEO, Online Solitaire

Tyler Herrmann

Engineering Manager, Peak Reservations

narf-studios

“Monitoring our customer’s SPA shop brings unique challenges. RumDash’s soft-navigation support and clear focus on developers help us spot and understand performance problems quickly, so we can spend less time interpreting dashboards and more time making it better.”

Dirk Lueth

Frontend Developer, narf-studios

Track Performance

Prove every fix worked

Monitor your Core Web Vitals over time and see how your performance changes impact user experience. Catch regressions before they affect your search rankings.

Validate your fixes.: Track the impact of your performance optimizations over time and confirm that your fixes are working as expected with real user data.
Catch regressions early.: See a Core Web Vital decline in your real user data days before it shows up in Google's 28-day field data, with the attribution you need to find the root cause.
Historical trending data.: View comprehensive time-series charts showing how your Core Web Vitals metrics evolve over weeks and months, not just snapshots.

Pricing

Choose the right plan for your business

Monthly

Annual

Developer

$60 /month $48 /month

Up to 500K monthly page views
1 domain
1 user
72-hour support response time

Team

Scale

$900 /month $720 /month

Includes 10M monthly page views
Unlimited domains
Unlimited users
Monthly data review and guidance
12-hour, dedicated support response time

+ 1M additional views at $30/mo each + 1M additional views at $24/mo each

Frequently asked questions

: Real User Monitoring (RUM) is a method used to monitor the performance of a website in the real world. RUM services aggregate and report performance data from real users' interactions with a website so that website developers can fix the issues most detrimental to site UX.
: Core Web Vitals are a set of UX metrics developed by Google. The metrics quantify key aspects of the user experience on a website, including perceived load time, responsiveness to interactions, and the visual stability of UI elements and content. The Core Web Vitals initiative was launched in 2020, and sites' CWV scores now factor into Google's search ranking algorithm.
: We collect the Core Web Vitals metrics, augmented with metadata about the particular cause(s) of the metric value. This metadata capture and aggregation is the secret sauce of RumDash.
: The RumDash script is less than 11 KB compressed, or about 1/5th the size of Datadog's "slim" RUM script, and it defers its work until the browser is idle to keep your site as responsive as possible 🚀
: The RumDash script uses a front-end technology called localStorage. If you already have a consent banner referencing the use of 'cookies and similar technologies', you're covered, as localStorage qualifies as a similar technology. If you don't, you'll have to add one.
: If we see that you're on track to exceed your monthly page-view quota, we'll throttle your ingest to evenly distribute it through the end of the month (so you don't end up with seemingly empty pockets of data) and we'll reach out to you to discuss your options. We'll never cut off your service without warning, and we'll work with you to find the best solution for your needs.
: The Team and Scale plans allow you to add packages of 1M additional monthly page views during checkout.

See what slows down your real visitors.

Check your site's Core Web Vitals for free, or start a trial and get your own ranked list of fixes.