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HTML5 CSS3 JavaScript Manifest V3 Firefox

Browser extension that identifies technologies used on any website, along with Geo, DNS, and WHOIS details.

Detection

Feature Description
Tech Scanner Detects frameworks, CMS platforms, analytics tools, CDNs, and more from 3,000+ technology signatures
Category Grouping Groups detected technologies by type — CMS, Analytics, CDN, JavaScript Frameworks, and more
Tech Icons Displays the recognizable logo alongside each detected technology
Live Rescan Listens for DOM mutations and re-analyzes as the page dynamically loads content
Email Extraction Collects any email addresses found within the page source

Site Details

Detail Description
Geolocation City, region, country, and ISP resolved via ip-api
IP Address Server IP resolved from the domain's DNS A record
DNS (A Record) Full A record lookup via Cloudflare's DoH API
WHOIS / Registrar Registrar name via RDAP with who-dat as fallback
Emails Found Email addresses scraped from the active tab

Installation

Chrome / Edge / Brave

  1. Clone or download this repository
  2. Open chrome://extensions/
  3. Enable Developer Mode (top-right toggle)
  4. Click Load unpacked and select the repository folder

Firefox (128+)

  1. Clone or download this repository
  2. Open about:debugging#/runtime/this-firefox
  3. Click Load Temporary Add-on
  4. Select any file inside the repository folder (e.g. manifest.json)

Requirements

Any modern Chromium-based browser (Chrome, Edge, Brave) or Firefox 128+. No backend required. All detection and analysis runs entirely within your browser.

Credits

Technology signatures and category data are sourced from enthec/webappanalyzer.

Homepage: genius-space.org

About

Browser extension that identifies technologies used on any website, along with Geo, DNS, and WHOIS details.

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