HTML2Canvas Angular - Javascript

HTML2Canvas is a javascript library that allows developers to take screenshots of web pages and convert the screenshot into a canvas image. This library can be used with Angular, a popular Javascript framework.

How to Install HTML2Canvas in Angular

1. Install HTML2Canvas using npm:

npm install html2canvas

2. Import and declare the HTML2Canvas library in the component that you want to use it in (e.g. app.component.ts):

import html2canvas from 'html2canvas';

declare var html2canvas: any;

3. Use the HTML2Canvas method to take a screenshot of the desired element (e.g. div):

html2canvas(document.querySelector('#elementToScreenshot')).then(canvas => {
  // convert canvas to image format
  let canvasImage = canvas.toDataURL();

  // display image in browser or save it as a file
  let imgElement = document.createElement('img');
  imgElement.src = canvasImage;
  document.body.appendChild(imgElement);
});

HTML2Canvas Options

HTML2Canvas has several options that developers can use to customize their screenshots. Some of the most commonly used options include:

• allowTaint: allows screenshots of cross-origin images
• backgroundColor: sets the background color of the screenshot
• foreignObjectRendering: allows screenshots of foreign object elements (e.g. iframes)

html2canvas(document.querySelector('#elementToScreenshot'), {
  allowTaint: true,
  backgroundColor: '#ffffff',
  foreignObjectRendering: true
}).then(canvas => {
  // convert canvas to image format
  let canvasImage = canvas.toDataURL();

  // display image in browser or save it as a file
  let imgElement = document.createElement('img');
  imgElement.src = canvasImage;
  document.body.appendChild(imgElement);
});

Conclusion

Using HTML2Canvas with Angular is an easy and effective way to take screenshots of web pages. With a few lines of code, developers can customize their screenshots and save them as images for later use.