Most of the web doesn't want to be read by machines — and it's built the defences to prove it. This is the largest audit of web access controls ever published.
See how Zyte helps access and unlock web data at real scale.
| Share of sites | |
|---|---|
| Open (no barrier) | 18.5% |
| Barrier present | 81.5% |
Open access
Only 18.5% of the world's most-visited landing pages operate without any technical barrier to automated access. The rest have built walls.
Barrier Stacking
AI Crawlers
27% of websites block all crawlers. 12.7% explicitly target AI bots.






Hardest Industry
57% of fashion sites require Moderate or harder access infrastructure.