Package Exports

link-preview-generator
link-preview-generator/index.js

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (link-preview-generator) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

link-preview-generator

NPM Downloads NPM License

Get preview data (a title, description, image, domain name) from a url. Library uses puppeteer headless browser to scrape the web site.

BLOG POST and DEMO

Install

$ npm install link-preview-generator

Usage

const linkPreviewGenerator = require("link-preview-generator");

const previewData = await linkPreviewGenerator(
  "https://www.youtube.com/watch?v=8mqqY2Ji7_g"
);
console.log(previewData);
/*
{
  title: 'Kiteboarding: Stylish Backroll in 4 Sessions - Ride with Blake: Vlog 20',
  description: 'The backroll is a staple in your kiteboarding trick ' +
    'bag. With a few small adjustments, you can really ' +
    'improve your style and make this basic your own. ' +
    'Sessio...',
  domain: 'youtube.com',
  img: 'https://i.ytimg.com/vi/8mqqY2Ji7_g/hqdefault.jpg',
  favicon: 'https://www.youtube.com/s/desktop/d3411c39/img/favicon.ico'
}
*/

API

linkPreviewGenerator(url, puppeteerArgs?, puppeteerAgent?)

Accepts a url, which is scraped and optional parameters puppeteerArgs -- browser options and puppeteerAgent -- browser user agent.

Returns an object with preview data of url.

url

Type: string

Scraped url.

puppeteerArgs

Type: array

Options to set on the Chrome browser.

puppeteerAgent

Type: string

Specific user agent to use.

Troubleshooting

If you need to deploy this library (Puppeteer) on Heroku, follow these steps.

If you want to run this library from within a Docker container:

pass the following puppeteer arguments as second argument

// Required for Docker version of Puppeteer
'--no-sandbox',
'--disable-setuid-sandbox',
// This will write shared memory files into /tmp instead of /dev/shm,
// because Docker’s default for /dev/shm is 64MB
'--disable-dev-shm-usage'

make sure your Docker image has all needed dependencies for headless chrome or just go straight away with buildkite/puppeteer
done