Free · no install
How fast is your store for real shoppers?
Enter your store address and we will email you the report. We read the field data Chrome already publishes about your site — real visits, real devices, real networks — and grade it against the same Core Web Vitals thresholds Google uses.
No install, no access to your site, no card. We read the public field data Chrome already publishes about your store, and email you the report so you still have it next week.
- Your shoppers, not a test
- Measured from real Chrome visits to your store over the last 28 days, not a single load from a data centre.
- Your slowest quarter
- The 75th percentile — what your worst-served shoppers experience, and the figure Google actually grades you on.
- Forty weeks of history
- Whether it is getting better or worse. A one-off test can never tell you that.
What you get back
Your own numbers, banded against Google's thresholds, with the trend and the distribution behind each one.
Three of three Core Web Vitals need work on northfield-supply.com
Measured from real Chrome visits over the last 28 days.
LCP
3.10s
58% of visits were poor
INP
412ms
44% of visits were poor
CLS
0.31
61% of visits were poor
How it works
There is no catch in the mechanism, so it is worth being specific about it.
- 1
You give us your address
Just the domain — the one you would type into a browser. No account, no card, and nothing to install on your store.
- 2
We read what Chrome already publishes
Google collects speed data from real Chrome users and publishes it per site. We read your entry, plus forty weeks of history, and we never touch your store.
- 3
You get the report in about a second
Your Core Web Vitals at the 75th percentile, the shape of your distribution, and which metric is costing you most.
PageSpeed Insights is free. Why use this?
Fair question. It gives you a verdict, and so does this. Here is what it cannot give you — and, in the last two rows, what this cannot either.
| PageSpeed Insights | This report | Yottaa Monitor | |
|---|---|---|---|
| A Core Web Vitals verdict | yes | yes | yes |
| Your real shoppers, not a simulated loadField data rather than a lab run | partly | yes | yes |
| Forty weeks of historyWhether it is getting better or worse | no | yes | yes |
| The shape of your distributionWhat share of visits were poor, not just the p75 | no | yes | yes |
| Benchmarked against comparable storesYour industry and platform, not an internet-wide average | no | partly | yes |
| What each third party costs youRated across 1,200+ tags in the Yottaa index | no | partly | yes |
| Every session, including below the traffic floorChrome publishes nothing for smaller stores | no | no | yes |
| Tied to sessions that convertedNeeds a tag on your store | no | no | yes |
"Partly" on PageSpeed Insights for real-shopper data: it does show the CrUX field figures when they exist, but its headline score is the lab run. "Partly" on this report for the benchmark rows means verifying your email opens them.
Before you type your domain in
The four things worth knowing, stated plainly.
- We never touch your site
- The scan reads Google’s public dataset and a DNS record. It does not load your store, crawl it, or send it a single request.
- Nothing to install
- No script, no tag, no app, no access to your admin. That is what makes this something you can run on a competitor as easily as on yourself.
- No card, no account
- There is no payment path in this tool. Your email is asked for once, to open the benchmark section and to send you the link.
- Your report is not public
- It sits at an unguessable link and is marked no-index, so it will not turn up in search. Forward it to a colleague if you want to; nobody finds it by accident.