Wappalyzer

Wappalyzer indentifies technologies on websites.

Note: The wappalyzer-core package provides a low-level API without dependencies.

Command line

Installation

$ npm i -g wappalyzer

Usage

wappalyzer <url> [options]

Options

-b, --batch-size=...     Process links in batches
-d, --debug              Output debug messages
-t, --delay=ms           Wait for ms milliseconds between requests
-h, --help               This text
--html-max-cols=...      Limit the number of HTML characters per line processed
--html-max-rows=...      Limit the number of HTML lines processed
-D, --max-depth=...      Don't analyse pages more than num levels deep
-m, --max-urls=...       Exit when num URLs have been analysed
-w, --max-wait=...       Wait no more than ms milliseconds for page resources to load
-P, --pretty             Pretty-print JSON output
-p, --probe              Perform a deeper scan by performing additional requests and inspecting DNS records
--proxy=...              Proxy URL, e.g. 'http://user:pass@proxy:8080'
-r, --recursive          Follow links on pages (crawler)
-a, --user-agent=...     Set the user agent string
-n, --no-scripts         Disabled JavaScript on web pages
-N, --no-redirect        Disable cross-domain redirects

Dependency

Installation

$ npm i wappalyzer

Usage

const Wappalyzer = require('wappalyzer');

const url = 'https://www.wappalyzer.com';

const options = {
  debug: false,
  delay: 500,
  headers: {},
  maxDepth: 3,
  maxUrls: 10,
  maxWait: 5000,
  recursive: true,
  probe: true,
  proxy: false,
  userAgent: 'Wappalyzer',
  htmlMaxCols: 2000,
  htmlMaxRows: 2000,
  noScripts: false,
  noRedirect: false,
};

const wappalyzer = new Wappalyzer(options)

;(async function() {
  try {
    await wappalyzer.init()

    // Optionally set additional request headers
    const headers = {}

    const site = await wappalyzer.open(url, headers)

    // Optionally capture and output errors
    site.on('error', console.error)

    const results = await site.analyze()

    console.log(JSON.stringify(results, null, 2))
  } catch (error) {
    console.error(error)
  }

  await wappalyzer.destroy()
})()

Multiple URLs can be processed in parallel:

const Wappalyzer = require('wappalyzer');

const urls = ['https://www.wappalyzer.com', 'https://www.example.com']

const wappalyzer = new Wappalyzer()

;(async function() {
  try {
    await wappalyzer.init()

    const results = await Promise.all(
      urls.map(async (url) => ({
        url,
        results: await wappalyzer.open(url).analyze()
      }))
    )

    console.log(JSON.stringify(results, null, 2))
  } catch (error) {
    console.error(error)
  }

  await wappalyzer.destroy()
})()

Events

Listen to events with site.on(eventName, callback). Use the page parameter to access the Puppeteer page instance (reference).

| Event | Parameters | Description | |-------------|--------------------------------|------------------------------------------| | log | message, source | Debug messages | | error | message, source | Error messages | | request | page, request | Emitted at the start of a request | | response | page, request | Emitted upon receiving a server response | | goto | page, url, html, cookies, scriptsSrc, scripts, meta, js, language links | Emitted after a page has been analysed | | analyze | urls, technologies, meta | Emitted when the site has been analysed |