How to fix getImageData() error The canvas has been tainted by cross-origin data?

by

As others have said you are “tainting” the canvas by loading from a cross origins domain.

https://developer.mozilla.org/en-US/docs/HTML/CORS_Enabled_Image

However, you may be able to prevent this by simply setting:

img.crossOrigin = "Anonymous";

This only works if the remote server sets the following header appropriately:

Access-Control-Allow-Origin "*"

The Dropbox file chooser when using the “direct link” option is a great example of this. I use it on oddprints.com to hoover up images from the remote dropbox image url, into my canvas, and then submit the image data back into my server. All in javascript

More Related Contents:

  1. How to clear the canvas for redrawing
  2. Resize HTML5 canvas to fit window
  3. HTML5 Canvas Resize (Downscale) Image High Quality?
  4. Resize image with javascript canvas (smoothly)
  5. HTML5 Canvas vs. SVG vs. div
  6. HTML5 Canvas toDataURL returns blank
  7. How do I fix blurry text in my HTML5 canvas?
  8. Getting binary (base64) data from HTML5 Canvas (readAsBinaryString)
  9. PHP+JS: How to do Fileuploads in HTML Form as Content-Type Multipart (via JS)?
  10. HTML5 Canvas camera/viewport – how to actually do it?
  11. canvas2d toDataURL() different output on different browser
  12. Cropping images in the browser BEFORE the upload [closed]
  13. Capture frames from video with HTML5 and JavaScript
  14. Image manipulation and texture mapping using HTML5 Canvas?
  15. event.offsetX in Firefox
  16. Web Workers and Canvas
  17. How to use Google fonts in Canvas when Drawing DOM objects in SVG?
  18. addEventListener for keydown on Canvas
  19. Load image from url and draw to HTML5 Canvas
  20. HTML canvas – drawing disappear on resizing
  21. How to flip images horizontally with HTML5
  22. how to draw a wheel of fortune?
  23. canvas getContext(“2d”) returns null
  24. clearing circular regions from HTML5 Canvas
  25. How to embed an input or textarea in a canvas element?
  26. How to detect shape on a transparent canvas?
  27. How can I get DPI from image in JS?
  28. Scaling an image to fit on canvas
  29. True Isometric Projection with HTML5 Canvas
  30. Split text into pages and present separately (HTML5)

Leave a Comment