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https://stackoverflow.com/questions/2745432/best-way-to-detect-that-html5-canvas-is-not-supported
There are two popular methods of detecting canvas support in browsers: Matt's suggestion of checking for the existence of getContext, also used in a similar fashion by the Modernizr library: . var canvasSupported = !!document.createElement("canvas").getContext;
https://webbrowsertools.com/canvas-fingerprint/
Sometimes to protect browser identity, a browser extension adds random noise to the canvas and this noise alters the fingerprint result (hash code). Although the actual identity might be protected, there are still methods to detect whether the canvas result is manipulated or not.
https://community.canvaslms.com/docs/DOC-10720-which-browsers-does-canvas-support
For troubleshooting, consider logging in to Canvas using an incognito or private browser window, which will provide a browser session without any prior browsing or search history, associated browser cookies, or other factors that may interfere with the browser.
https://docs.microsoft.com/en-us/archive/msdn-magazine/2011/october/html5-browser-and-feature-detection
Still, because the new HTML5 standards remain a moving target, and because most Internet users don’t use the latest versions of the various Web browsers, serving the right markup is more important than ever. Browser Detection. One approach to handling differences among browsers is to use browser detection.
https://developer.mozilla.org/en-US/docs/Web/API/WebGL_API/By_example/Detect_WebGL
Feature-detecting WebGL. In this first example we are going to check whether the browser supports WebGL.To that end we will try to obtain the WebGL rendering context from a canvas element. The WebGL rendering context is an interface, through which you can set and query the state of the graphics machine, send data to the WebGL, and execute draw commands. ...
https://browserleaks.com/canvas
Browser Fingerprinting with no user agent identifiers, only through the HTML5 Canvas element. The method is based on the fact that the same canvas-code can produce different pixels on a different web browser, depending on the system on which it was executed.
Nov 04, 2019 · "Can I use" provides up-to-date browser support tables for support of front-end web technologies on desktop and mobile web browsers. The site was built and is maintained by Alexis Deveria , with occasional updates provided by the web development community .
https://detectmybrowser.com/
Detect my browser checks your browser. This page gives you information about your web browser and its plugins, CSS3 and HTML 5 capabilities. It uses various javascript libraries for the detection of your browser. If most of your circles are red then you're using an ancient browser which doesn't support modern web technologies.
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