Klaviyo vs Postscript

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

Top sites by authority

Klaviyo · Postscript · 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

Klaviyo · Postscript · share of sites in each country using one or the other

United States 94,562

5,251

United Kingdom 37,244

1,066

Canada 29,978

1,495

Australia 27,541

819

Germany 24,145

468

France 21,230

455

India 20,024

872

Spain 16,028

348

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 Klaviyo sites · All Postscript sites