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Convert an Image to dataUri

  1. function toDataUri(img, scalar = 1) {
  2.   const canvas = document.createElement('canvas');
  3.   canvas.width = img.width * scalar;
  4.   canvas.height = img.height * scalar;
  5.   canvas.getContext('2d').drawImage(img, 0, 0, canvas.width, canvas.height);
  6.   return canvas.toDataURL('image/png');
  7. }
  8.  
  9. const img = new Image();
  10. img.crossOrigin = 'Anonymous';
  11. img.addEventListener('load', () => {
  12.   const thumb = new Image();
  13.   // use the data URI as the source
  14.   thumb.src = toDataUri(img, .3);
  15.   document.body.appendChild(thumb);
  16. });
  17. img.src = 'https://zevanrosser.com/fotoda/slide-shot-9.jpg';

Load an image and convert it to a data URI.

snippet.zone ~ 2021-22 /// {s/z}