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 94,628

5,115

United Kingdom 37,132

1,009

Canada 29,501

1,402

Australia 27,110

743

Germany 23,957

431

France 20,942

413

India 19,705

833

Spain 16,472

323

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 Klaviyo sites · All Postscript sites