This feature protects user privacy by preventing malicious websites from "stealing" sensitive images (like bank statements or private photos) that might be cached or authenticated in a user's browser. Without this, a script could draw a private image to a canvas, read its pixels, and send that data to a third-party server. How to Fix It (CORS) cookies - Why is a "tainted canvas" a risk?
: Attempting to use getImageData() will throw a SecurityError .
Once a canvas is "tainted," it is no longer considered "origin-clean," and the browser blocks functions that allow you to read its pixel data:
This feature protects user privacy by preventing malicious websites from "stealing" sensitive images (like bank statements or private photos) that might be cached or authenticated in a user's browser. Without this, a script could draw a private image to a canvas, read its pixels, and send that data to a third-party server. How to Fix It (CORS) cookies - Why is a "tainted canvas" a risk?
: Attempting to use getImageData() will throw a SecurityError . Tainted Canvas
Once a canvas is "tainted," it is no longer considered "origin-clean," and the browser blocks functions that allow you to read its pixel data: This feature protects user privacy by preventing malicious