What is CORS and why is it so annoying

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  • Does it though? I just tried calling https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS/cors_principle.png in a tag on https://codesandbox.io/ and it displayed even though there is no access-control-allow-origin header coming from that URL. According to https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS and the image I tested, images are concerned by CORS only if drawn in a canvas.

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