# Data reports

> Original data from Sitepeel’s own measurements of top websites: fonts and colors, tech stacks, llms.txt and AI crawler rules, and AI slop tells. Free CSVs.

Canonical page: https://sitepeel.dev/reports/

What we found by measuring real websites. Each report has its method and a CSV that is free to use with credit (CC BY 4.0).

Updated: 2026-11-05

## Explore

- [llms.txt and AI crawlers on 193 top sites](https://sitepeel.dev/reports/llms-txt-ai-crawlers-2026/index.md): Sitepeel checked 193 top brand sites in November 2026: 58% publish an llms.txt and 11% block a named AI crawler in robots.txt. Bot-by-bot table, free CSV.
- [What 191 top websites are built with](https://sitepeel.dev/reports/what-top-websites-are-built-with-2026/index.md): Sitepeel measured 191 top brand sites on November 4, 2026: 76% run React, 46% Next.js, 40% Tailwind CSS. Hosting and analytics too, free CSV.
- [Fonts and colors of top websites](https://sitepeel.dev/reports/top-website-fonts-and-colors/index.md): The fonts and colors of 168 top websites, measured in October 2026: Inter on 26%, custom type on 54%, 44% in dark mode. Charts, method and a free CSV.
- [AI slop on 126 startup websites](https://sitepeel.dev/reports/ai-slop-websites-2026/index.md): We ran the AI slop checker on 126 startup home pages from YC’s 2026 batches. The score spread, the 10 most common tells and the method, with a free CSV.