WebPulse has now scanned over 10 million sites across Tranco top-100K, Common Crawl WARC archives, and regional domain lists. Among detected frameworks, WordPress accounts for 74.3% — three out of every four sites where we can identify the underlying technology.
The Scale of Concentration
What This Means
An HHI of 0.56 is far above the 0.25 threshold that economists use to define a concentrated market. The detected web isn't just WordPress-heavy — it's a near-monoculture. When a single codebase underlies three-quarters of detectable sites, every WordPress vulnerability is a systemic event.
This concentration also explains why the web feels homogeneous. The same themes, the same plugins, the same performance bottlenecks — because 74.3% of detected sites share the same technical DNA.
Important Qualifier
WebPulse detects frameworks via HTML signatures and HTTP headers. WordPress has the strongest signatures of any framework — its output is unmistakable. Modern frameworks like Next.js and Astro produce cleaner HTML that's harder to fingerprint. Our 74.3% is 'of detected' — not 'of the web.' The actual WordPress share of all websites is lower, but its share of identifiable sites is this dominant.
