Contact Form 7 vs Stackable

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

Top sites by authority

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

Japan 230,323

550

United States 208,161

3,766

India 131,722

1,166

Italy 124,689

936

Germany 109,816

1,401

Spain 103,856

924

France 101,458

1,692

United Kingdom 90,771

1,262

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 Stackable sites