Take screenshots of urls. Inspired by https://meowni.ca/posts/2017-puppeteer-tests/

index.js

const puppeteer = require('puppeteer')
const express = require('express')
const querystring = require('querystring')
const server = express()

/**
 * Screenshot a url
 * e.g. /screenshot?url=https://www.npmjs.com&width=800&height=600
 */
server.get('/screenshot', async (req, res) => {
	try {
		const browser = await puppeteer.launch()
		const page = await browser.newPage()
		const path = `${querystring.escape(req.query.url)}_${req.query.height}_${req.query.width}.png`

		await page.goto(req.query.url)
		await page.setViewport({
			height: Number(req.query.height),
			width: Number(req.query.width)
		})
		await page.screenshot({
			path: path
		})

		await browser.close()

		res.send({
			message: 'sweet shot'
		})
	} catch (err) {
		console.error(err)
		res.status(500).end()
	}
})

server.listen(9000)

package.json

{
	"name": "screenshots",
	"version": "1.0.0",
	"description":
		"Take screenshots of urls. Inspired by https://meowni.ca/posts/2017-puppeteer-tests/",
	"main": "index.js",
	"license": "ISC",
	"dependencies": {
		"express": "4.16.3",
		"puppeteer": "1.2.0"
	}
}