openGraphScraper

A simple node module(with TypeScript declarations) for scraping Open Graph and Twitter Card and other metadata off a site.

Note: open-graph-scraper doesn't support browser usage at this time but you can use open-graph-scraper-lite if you already have the HTML and can't use Node's Fetch API.

Installation

npm install open-graph-scraper --save

Usage

const ogs = require('open-graph-scraper');
const options = { url: 'http://ogp.me/' };
ogs(options)
  .then((data) => {
    const { error, html, result, response } = data;
    console.log('error:', error);  // This returns true or false. True if there was an error. The error itself is inside the result object.
    console.log('html:', html); // This contains the HTML of page
    console.log('result:', result); // This contains all of the Open Graph results
    console.log('response:', response); // This contains response from the Fetch API
  })

Results JSON

Check the return for a success flag. If success is set to true, then the url input was valid. Otherwise it will be set to false. The above example will return something like...

{
  ogTitle: 'Open Graph protocol',
  ogType: 'website',
  ogUrl: 'https://ogp.me/',
  ogDescription: 'The Open Graph protocol enables any web page to become a rich object in a social graph.',
  ogImage: [
    {
      height: '300',
      type: 'image/png',
      url: 'https://ogp.me/logo.png',
      width: '300'
    }
  ],
  charset: 'utf-8',
  requestUrl: 'http://ogp.me/',
  success: true
}

Options

Name	Info	Default Value	Required
url	URL of the site.		x
html	You can pass in an HTML string to run ogs on it. (use without options.url)
fetchOptions	Options that are used by the Fetch API	{}
timeout	Request timeout for Fetch (Default is 10 seconds)	10
blacklist	Pass in an array of sites you don't want ogs to run on.	[]
onlyGetOpenGraphInfo	Only fetch open graph info and don't fall back on anything else.	false
customMetaTags	Here you can define custom meta tags you want to scrape.	[]
urlValidatorSettings	Sets the options used by validator.js for testing the URL	Here

Note: open-graph-scraper uses the Fetch API for requests and most of Fetch's options should work as open-graph-scraper's fetchOptions options.

Custom Meta Tag Example

const ogs = require('open-graph-scraper');
const options = {
  url: 'https://github.com/jshemas/openGraphScraper',
  customMetaTags: [{
    multiple: false, // is there more than one of these tags on a page (normally this is false)
    property: 'hostname', // meta tag name/property attribute
    fieldName: 'hostnameMetaTag', // name of the result variable
  }],
};
ogs(options)
  .then((data) => {
    const { result } = data;
    console.log('hostnameMetaTag:', result.customMetaTags.hostnameMetaTag); // hostnameMetaTag: github.com
  })

HTML Example

const ogs = require('open-graph-scraper');
const options = {
  html: `<html><head>
  <link rel="icon" type="image/png" href="https://bar.com/foo.png" />
  <meta charset="utf-8" />
  <meta property="og:description" name="og:description" content="html description example" />
  <meta property="og:image" name="og:image" content="https://www.foo.com/bar.jpg" />
  <meta property="og:title" name="og:title" content="foobar" />
  <meta property="og:type" name="og:type" content="website" />
  </head></html>`
};
ogs(options)
  .then((data) => {
    const { result } = data;
    console.log('result:', result);
    // result: {
    //   ogDescription: 'html description example',
    //   ogTitle: 'foobar',
    //   ogType: 'website',
    //   ogImage: [ { url: 'https://www.foo.com/bar.jpg', type: 'jpg' } ],
    //   favicon: 'https://bar.com/foo.png',
    //   charset: 'utf-8',
    //   success: true
    // }
  })

User Agent Example

The request header is set to undici by default. Some sites might block this, and changing the userAgent might work. If not you can try using a proxy for the request and then pass the html into open-graph-scraper.

const ogs = require("open-graph-scraper");
const userAgent = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Safari/537.36';
ogs({ url: 'https://www.wikipedia.org/', fetchOptions: { headers: { 'user-agent': userAgent } } })
  .then((data) => {
    const { error, html, result, response } = data;
    console.log('error:', error);  // This returns true or false. True if there was an error. The error itself is inside the result object.
    console.log('html:', html); // This contains the HTML of page
    console.log('result:', result); // This contains all of the Open Graph results
    console.log('response:', response); // This contains response from the Fetch API
  })

ngprnk/openGraphScraper