Tainted canvases may not be exported localhost. When I call GetCroppedCanvasDataURLAsy...

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  1. Tainted canvases may not be exported localhost. When I call GetCroppedCanvasDataURLAsync method to get the cropped image, I get the following exception " Tainted canvases may not be exported" Sep 17, 2018 · 总结：Canvas 可以正常的渲染跨域图片，但是在跨域图片没有设置跨域响应头或没有设置 crossOrigin = 'anonymous' 的时候，使用 canvas. I either get this error message: If I set the crossOrigin="anonymous" attribute to the elements, which allegedly resolves my tainted canvas issue, I’ll get this error message: Apr 1, 2021 · 现象：在使用canvas的toDataURL（）方法时，控制台有时会报错：Uncaught DOMException: Failed to execute ‘toDataURL’ on ‘HTMLCanvasElement’: Tainted canvases may not be exported. DOMException: Failed to execute 'toDataURL' on 'HTMLCanvasElement': Tainted canvases may not be exported. #39 Closed jithinagiboson opened this issue on Jan 7, 2021 · 7 comments Sep 3, 2021 · Uncaught (in promise) DOMException: Failed to execute 'toDataURL' on 'HTMLCanvasElement': Tainted canvases may not be exported 经过排查，页面在请求图片时产生跨域情况，canvas认为该图片数据为 污染的数据，是不安全的数据，无法导出base64数据。 Nov 8, 2017 · 最近负责了一个后台功能的扩展，因为没有前端，所以客串了一把前端，需求的内容是做一个视频截图的功能，这期间遇到了canvas 的跨域问题， Uncaught DOMException: Failed to execute 'toDataURL' on 'HTMLCanvasElement': Tainted canvases may not be exported； Aug 15, 2023 · Description I am initializing Cropper with Blob URL's. toDataURl 会抛出如下错误： Chrome 没有设置 crossOrigin Uncaught DOMException: Failed to execute 'toDataURL' on 'HTMLCanvasElement': Tainted canvases may not be exported. Jul 8, 2015 · Uncaught SecurityError: Failed to execute 'toDataURL' on 'HTMLCanvasElement': Tainted canvases may not be exported If a try to do the same thing without adding level to the map (just using the default OpenLayer map) I am able to generate the data URL and download the map in png format. This happens because the canvas becomes "tainted" when you draw an image from another domain onto it. Sep 18, 2025 · In this example, we wish to permit images from a foreign origin to be retrieved and saved to local storage. In the case of a canvas element, the source of the problem is always with some image (or images) that you're drawing onto it. crossOrigin = 'Anonymous'，Tainted canvases may not be exported？ - SegmentFault 思否 问答 博客 资讯 标签 用户 活动 极客观点 项目管理 HarmonyOS 开发者社区 ONES 研发管理思否企业问答 Oct 16, 2017 · SecurityError: Failed to execute 'toDataURL' on 'HTMLCanvasElement': Tainted canvases may not be exported [duplicate] Ask Question Asked 8 years, 4 months ago Modified 8 years, 4 months ago Feb 20, 2019 · 上传视频并截图，跨域报错的解决办法 跨域报错的原因 最开始上传视频成功后，video标签的src会直接引入上传后的服务端资源地址，然后使用canvas截图就发生了跨域报错的提示。 Failed to execute 'toDataURL' on 'HTMLCanvasElement': Tainted canvases may not be exported. jrgtd admdek vqpgfg cyn skfkf jnb mfckh ohaz ffhyh lklni
    Tainted canvases may not be exported localhost. When I call GetCroppedCanvasDataURLAsy...Tainted canvases may not be exported localhost. When I call GetCroppedCanvasDataURLAsy...