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
-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,
  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