What is Preact?
FrameworkPreact is a web framework: Fast 3kB alternative to React. Tech Stack Detector identifies Preact on any website by analysing script URLs.
Preact is a web framework (Framework). See websites using Preact ↓
How Tech Stack Detector detects Preact
Preact is matched from these signals during a single, ordinary page request. Each one contributes to the confidence score shown on a scan.
- Script SrcPreact script source
Websites using Preact
No websites in our public index are known to use Preact yet. Scan a site above that uses it to be the first. Your result becomes a shareable /site/… page.
Alternatives to Preact
Other Framework technologies Tech Stack Detector detects: popular alternatives and related tools, most-detected first.
Compare Preact
Side-by-side comparisons of Preact with other Framework technologies.
Popular technologies
The technologies most often detected across all websites scanned on Tech Stack Detector.
Frequently asked questions
What is Preact?
Preact is a web framework: Fast 3kB alternative to React. Tech Stack Detector identifies Preact on any website by analysing script URLs. Its official website is https://preactjs.com.
How can I tell if a website uses Preact?
Enter any URL into Tech Stack Detector and it reports whether Preact is present, with a confidence score and the exact evidence it matched. Detection is based on script URLs. No login or crawling of the site is required.
What are some alternatives to Preact?
Other Framework technologies Tech Stack Detector detects include React, Next.js, Laravel, Astro, Vue.js and Nuxt. You can compare any of them side by side with Preact.
Data last updated October 20, 2026 · based on 618 recently scanned websites.