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 197,898

169

United States 175,528

650

Italy 111,987

183

India 110,511

441

Germany 95,287

275

Spain 93,888

195

France 85,028

257

United Kingdom 77,359

324

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 Contact Form 7 sites · All Web Worker Offloading sites