Intersection Observer vs Priority Hints

Head-to-head usage across the sites we track.

Top sites by authority

Intersection Observer · Priority Hints · how many of each technology's sites sit in the web's highest authority tiers

Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.

By country

Intersection Observer · Priority Hints · share of sites in each country using one or the other

United States 490

1,351,256

India 493

448,110

United Kingdom 318

411,089

Germany 272

399,516

Brazil 167

345,511

France 396

334,085

Canada 213

290,671

Italy 317

279,196

Audience countries from the Chrome UX Report, top markets of either technology.

Real user performance

Median site's p75 values from the Chrome UX Report, Aug 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.

Sites that switched

Domains that dropped one technology and adopted the other within about a year, data nobody else gives away free.

All Intersection Observer sites · All Priority Hints sites