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 580

1,454,879

India 566

480,661

United Kingdom 352

448,990

Germany 298

427,533

France 448

379,770

Brazil 176

352,974

Canada 252

321,758

Italy 350

310,084

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, Jun 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