What is the problem with CORS when using aws s3 and html2canvas on various browsers?

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The main problem with CORS (Cross-Origin Resource Sharing) when using AWS S3 and HTML2Canvas on various browsers is that some browsers enforce stricter CORS policies than others. This can result in issues with accessing S3 resources, as HTML2Canvas may not be able to properly fetch the necessary images or fonts from S3 due to CORS restrictions. This can cause errors or incomplete document rendering. Additionally, configuring S3 CORS policies can be complex and time-consuming, requiring specific knowledge and expertise in order to avoid potential security risks.