Contact Form 7 vs Slim SEO

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

Top sites by authority

Contact Form 7 · Slim SEO · 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

Contact Form 7 · Slim SEO · share of sites in each country using one or the other

Japan 230,323

508

United States 208,161

2,127

India 131,722

692

Italy 124,689

664

Germany 109,816

955

Spain 103,856

494

France 101,458

703

United Kingdom 90,771

898

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 Contact Form 7 sites · All Slim SEO sites