html2canvas VS og-image

GItHub :- https://github.com/niklasvh/html2canvas

That's slightly harder, but still possible by first rendering the HTML onto a canvas.

Example here: http://html2canvas.hertzen.com/

If you have it working in the browser you could use this.https://html2canvas.hertzen.com/

, etc. for styling. So we need to parse our DOM as canvas and then convert it into a png. There's a libary which helps us do just that. html2canvas. We modify our downloadQRCode function such that first we get snapshot of our DOM as a canvas then we convert that into a png. Final code // QRCodeTemplate.tsx import React from "react" import html2canvas from "html2canvas" import { QRCodeCanvas } from "qrcode.react" import Button from "components/Button" import QRCodeTemplate from "components/dashboard/QRCodeTemplate" const QRCodeDownload = () => { const url = "https://anshsaini.com" const getCanvas = () => { const qr = document.getElementById("fancy-qr-code") if (!qr) return return html2canvas(qr, { onclone: snapshot => { const qrElement = snapshot.getElementById("fancy-qr-code") if (!qrElement) return // Make element visible for cloning qrElement.style.display = "block" }, }) } const downloadQRCode = async () => { const canvas = await getCanvas() if (!canvas) throw new Error(" not found in DOM") const pngUrl = canvas .toDataURL("image/png") .replace("image/png", "image/octet-stream") const downloadLink = document.createElement("a") downloadLink.href = pngUrl downloadLink.download = "QR code.png" document.body.appendChild(downloadLink) downloadLink.click() document.body.removeChild(downloadLink) } return (

QRCodeTemplate>

Download QR CodeButton> div> div> ) } export default QRCodeDownload Enter fullscreen mode Exit fullscreen mode The Result We have a beautiful QR code saved as a png. And with the power of React, we can create as many styles as we want.

Hey guys, I using html2canvas in our project and I am facing this issue.

use http://html2canvas.hertzen.com/ to convert the div to an image if you want

This looks super useful! I’ve previously used [html2canvas](https://html2canvas.hertzen.com/) to make a simple tool for generating graphics for a news org, but I can see myself using this going forward.

Now here's the thing since these are part of the meta tags, and The image shown in the tags are ... well! images, making them dynamic is a bit tricky. generating images isn't a menial task that just every web server can do ... it's resource intensive, time-consuming and all the other nightmares. and making it part of your dynamic web app is another ball game altogether. So what's new? well, @vercel/og is, this library lets you build image content from HTML/React that too insanely fast, like really fast . and you can pair this with any edge network like AWS Lambda on the edge, Cloudflare workers, etc to make it even faster.

It’s not embedding. When you paste that image url a serverless function running a headless browser requests say a next app which loads up a page based on the params in the url. Then we take a snapshot and image data is sent back as response to you hence the image appears. You can check out this: with NextJS and puppeteer

The other day I was looking through a repo and stumbled across someone using Vercel’s open graph image generator (https://og-image.vercel.app/), something I had no idea existed. I was able to set it up and replace my own implementation of something similar on my blog in an evening. My implementation involved generating images at build time with Gatsby, why I ever thought that was a good idea is beyond me.

But what if the content of the page is not visual at all, and no photo really suits the contents of the page? And what if we have a lot of these pages, with dynamically generated content? Luckily we are not limited to photography, we can use text! The prime example of this is how GitHub generates previews for issue URLs: they generate an image containing enough info such that users know what they will click on. These images are generated on-demand, as storing an image for every GitHub pull request or issue would be unfeasable. Another example is Vercel, which even open sourced their Open Graph Image as a Service that they occasionally use on blog posts or announcements.

Hi, it is basically a embedded, better and easier (API-wise) version of https://github.com/vercel/og-image

Vercel has a really good simple generator if you don’t want to spend time on graphic design: https://og-image.vercel.app

After some research, I found out that Vercel made an app (https://og-image.vercel.app/) that was really good, but did not quite fit what I was looking for, so I largely cloned the idea (but with my own code).

Nice work. But I am using my custom fork of https://github.com/vercel/og-image.