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Cookieless real user monitoring with content analytics built in. You get Core Web Vitals measured by Google's own library, and every click tied to the page, article and slot it came from. Nothing is stored on the visitor's device.
§1 · The consent gap
Most monitoring scripts set a cookie, so they wait for consent. The people who never answer the banner, or decline it, never get measured. Those are often the visitors on slow phones and slow connections, the ones you most need to see.
We designed the script so there's nothing to consent to for storage: no cookies, no localStorage, no sessionStorage, no fingerprinting. Same-day visits are grouped on our servers with a salt that is deleted every midnight, and the raw IP address is never stored.
§2 · One script, two questions
Performance
LCP, INP, CLS, FCP and TTFB from Google's web-vitals, so the numbers match Search Console. Each one comes with its cause: the LCP element and its sub-parts, the slow interaction's target, the element that shifted.
Content
Mark an area with data-cv-region and you'll see which related article, product or slot gets clicked, and from which article. Pages are matched to articles automatically from your existing JSON-LD.
The overlap
Each page view carries its own vitals and its own clicks. So you can ask the question neither kind of tool answers alone: do slow pages get fewer clicks, less reading, fewer product views?
Fig. 2 · clicks by region on one article, last 7 days (illustrative)
| Region | Most clicked | Slot | Clicks | CTR | p75 LCP of source |
|---|---|---|---|---|---|
| related-articles | article:67890 | 2 | 1,284 | 6.1% | 1.9 s |
| product-carousel | product:CH-9109014 | 0 | 642 | 3.0% | 1.9 s |
| nav | /explorer/builds/ | 4 | 511 | 2.4% | 1.9 s |
| related-articles (LCP > 4 s) | article:67890 | 2 | 97 | 3.2% | 4.6 s |
§3 · Engineering notes
What a returning visitor downloads when your settings change. We serve the update as a zstd delta against the version they already have (RFC 9842). A full download is 8,413 B.
The measurements →Deep diagnostics (every resource, long animation frames down to the function name) arrive in a separate file, and only once your page has finished loading and the browser is idle.
IP addresses written to disk. The IP is used once in memory, for the visitor hash and a country lookup, and then it's gone.