What is Semantic UI?
UI LibrarySemantic UI is an UI or JavaScript library: UI framework with human-friendly HTML. Tech Stack Detector identifies Semantic UI on any website by analysing stylesheet and link tags.
Semantic UI is an UI or JavaScript library (UI Library). See websites using Semantic UI ↓
How Tech Stack Detector detects Semantic UI
Semantic UI is matched from these signals during a single, ordinary page request. Each one contributes to the confidence score shown on a scan.
- Link HrefSemantic/Fomantic UI stylesheet
Websites using Semantic UI
No websites in our public index are known to use Semantic UI yet. Scan a site above that uses it to be the first. Your result becomes a shareable /site/… page.
Alternatives to Semantic UI
Other UI Library technologies Tech Stack Detector detects: popular alternatives and related tools, most-detected first.
Compare Semantic UI
Side-by-side comparisons of Semantic UI with other UI Library technologies.
Popular technologies
The technologies most often detected across all websites scanned on Tech Stack Detector.
Frequently asked questions
What is Semantic UI?
Semantic UI is an UI or JavaScript library: UI framework with human-friendly HTML. Tech Stack Detector identifies Semantic UI on any website by analysing stylesheet and link tags. Its official website is https://semantic-ui.com.
How can I tell if a website uses Semantic UI?
Enter any URL into Tech Stack Detector and it reports whether Semantic UI is present, with a confidence score and the exact evidence it matched. Detection is based on stylesheet and link tags. No login or crawling of the site is required.
What are some alternatives to Semantic UI?
Other UI Library technologies Tech Stack Detector detects include Tailwind CSS, Bootstrap, jQuery, Swiper, GSAP and styled-components. You can compare any of them side by side with Semantic UI.
Data last updated October 20, 2026 · based on 618 recently scanned websites.