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 491

1,391,338

India 491

486,083

United Kingdom 302

435,468

Germany 278

421,099

Brazil 159

362,916

France 394

361,116

Italy 321

311,723

Canada 218

309,477

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, Sep 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