WebPulse's framework detection engine identifies the technology behind approximately 35% of scanned sites. The other 65% are undetectable — no HTML signatures, no telltale headers, no meta generator tags. This detection gap is itself one of the most important data points we publish.
Why Sites Are Undetectable
Modern frameworks are designed to be invisible. Next.js, SvelteKit, and Remix produce clean HTML that doesn't announce its origin. CDN-proxied sites strip identifying headers. Custom applications built on FastAPI, Express, or Go have no framework signatures at all.
The Detection Bias
This means WebPulse's 74.3% WordPress figure is inflated by detection bias. WordPress practically shouts 'I'm WordPress' in its HTML. Modern frameworks whisper — or say nothing. The 65% undetectable web almost certainly has a higher modern framework share than the 35% we can identify.
This is why WebPulse always says 'of detected frameworks' — never 'of the web.' The distinction isn't pedantic; it's the difference between accurate reporting and misleading claims.
What AI Agents See
Here's the twist: AI agents don't care about framework detection. They care about content quality, structured data, API availability, and response speed. The 65% undetectable web — the modern, clean, framework-invisible web — is exactly the web that AI agents consume most efficiently. The web that's hardest for WebPulse to detect may be the web best prepared for the AI-first future.
