Contact Form 7 vs Web Worker Offloading

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

Top sites by authority

Contact Form 7 · Web Worker Offloading · 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 · Web Worker Offloading · share of sites in each country using one or the other

Japan 230,323

233

United States 208,161

900

India 131,722

599

Italy 124,689

263

Germany 109,816

388

Spain 103,856

239

France 101,458

358

United Kingdom 90,771

405

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 Web Worker Offloading sites