What is Express.js?

Framework

Express.js is a web framework: Fast, unopinionated Node.js web framework. Tech Stack Detector identifies Express.js on any website by analysing HTTP response headers.

Express.js is a web framework (Framework), detected on 4 websites in our index. See websites using Express.js ↓

CategoryFramework
Official siteexpressjs.com
Detection signals1 signal
In our index4 websites

How Tech Stack Detector detects Express.js

Express.js is matched from these signals during a single, ordinary page request. Each one contributes to the confidence score shown on a scan.

  • HeaderX-Powered-By: Express

Detecting Express.js also implies Node.js.

Websites using Express.js

Recently scanned websites where we detected Express.js. Open one to see its full technology stack.

Often used with Express.js

Technologies most frequently detected alongside Express.js across scanned websites.

Alternatives to Express.js

Other Framework technologies Tech Stack Detector detects: popular alternatives and related tools, most-detected first.

Compare Express.js

Side-by-side comparisons of Express.js with other Framework technologies.

Popular technologies

The technologies most often detected across all websites scanned on Tech Stack Detector.

Frequently asked questions

What is Express.js?

Express.js is a web framework: Fast, unopinionated Node.js web framework. Tech Stack Detector identifies Express.js on any website by analysing HTTP response headers. Its official website is https://expressjs.com.

How can I tell if a website uses Express.js?

Enter any URL into Tech Stack Detector and it reports whether Express.js is present, with a confidence score and the exact evidence it matched. Detection is based on HTTP response headers. No login or crawling of the site is required.

What does detecting Express.js imply?

When Express.js is detected, Tech Stack Detector also infers Node.js, because Express.js is built on top of it.

How many websites use Express.js?

Express.js has been detected on 4 websites in the public Tech Stack Detector scan index. This reflects sites that visitors have analysed here, not global market share.

What are some alternatives to Express.js?

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 Express.js.

Data last updated October 20, 2026 · based on 618 recently scanned websites.