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 199,815

456

United States 181,373

1,971

India 113,364

621

Italy 105,059

585

Germany 97,345

884

Spain 87,110

449

France 82,899

611

United Kingdom 78,201

823

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 Contact Form 7 sites · All Slim SEO sites