Klaro
Klaro is an open-source consent manager. A site's own developers install it and serve it from the site's own code, rather than loading a banner from a vendor's hosted service. If you have just met the name in a page's source, in a cookie notice's small print, or in a stack detector, that is what it is. In this index it is the smallest of the nine consent platforms measured: Klaro was identified on 4 of the 5,294 sites in this snapshot, 0.1% of them, and ninth of nine by number of sites.
Three trackers on the median Klaro site, the highest median of the nine platforms
Of the nine consent platforms measured here, Klaro's sites carry the highest median tracker count: 3. That is the one figure on which a four-site sample reaches the top of a table, and it is worth being blunt about what produces it. A median over four sites is the midpoint of four numbers. Move one site and the figure moves. The rank is a fact about the nine platforms; the distance behind it is not something four measurements can establish. Treat it as a direction to check rather than a conclusion to quote.
Forty-five requests, seven companies
The median Klaro site issued 45 requests — no platform of the nine issues more, and the IAB TCF group matches it exactly — and contacted 7 companies, third of nine, level with Osano. The median first third-party contact landed at 588 ms, fifth of nine. So on companies contacted and on timing these sites sit inside the range the other eight platforms occupy; on request volume they sit at the top of it, tied with a group measured on 846 sites rather than four. Nothing about the pages is unusual except the tracker median above, and the fact that there are only four of them.
All four sites saw contact before the banner could be answered
On each of the four sites, at least one company was contacted inside the window that closes when a visitor could first have answered the banner. That is 100%: no platform of the nine records a higher share, and Iubenda and Termly, measured on 21 and 10 sites, also reach 100. The median number of companies contacted inside that window was 7. After the window closed, the median site added none at all: the median count of companies arriving after it is 0, meaning that on a typical Klaro site here, everything the crawl recorded had already arrived.
Two NGOs, a university and a games publisher
The four sites are unicef.org, iucn.org, uiowa.edu and innogames.de, and they do not behave alike. iucn.org and innogames.de each contacted one company, at 316 ms and 339 ms; 316 ms is the earliest first contact recorded on any Klaro site here. unicef.org contacted 7 companies, all 7 inside the consent window. uiowa.edu contacted 14, with 13 inside it. A range of 1 to 14 across four sites is the honest summary of what this platform's presence predicts about a page's third-party load, which is close to nothing.
What four measurements can carry
The site count and the per-site figures are exact: four sites, and the numbers recorded on each of them. The medians derived from four sites are directional and should be read that way, particularly against platforms in this index measured on hundreds of sites. If the question is what one particular Klaro site loads, the index figure is not the answer; the page in front of you is. MurmStack measures a single page and reports the same fields, including how many companies were contacted before the banner could be answered.
| Site | Companies | Before consent | First contact |
|---|---|---|---|
| unicef.org | 7 | 7 | 829 ms |
| innogames.de | 1 | 1 | 339 ms |
| uiowa.edu | 14 | 13 | 588 ms |
| iucn.org | 1 | 1 | 316 ms |
| Tool | Sites |
|---|---|
| Klaro | 4 |
Questions
How many sites in this index run Klaro?
Four, out of the 5,294 sites in this snapshot, which is 0.1% of them and ninth of the nine consent platforms measured here by site count.
Its sites have the highest median tracker count of the nine platforms. How much weight does that carry?
The rank is correct: 3 trackers is the highest median of the nine. The sample behind it is four sites, so the median is the midpoint of four numbers and shifts if any one of them changes. Read it as a signal worth checking, not as a measured gap between Klaro and the other eight.
How many companies were contacted before the banner could be answered?
The median Klaro site contacted 7 inside that window, and all four sites had at least one. After the window closed the median site added none, so the median count of companies arriving after it is 0.
Does installing Klaro make a site lighter?
Nothing in this data supports that. The four sites recorded here range from 1 company contacted to 14, with the same consent manager on all of them. What a page loads is decided by what has been added to the page, not by which banner sits on top of it.