Hello @Jyoti Rajpurohit ,
Welcome to Q&A Forum!
According to my research, Image Renditions is only available for classic SharePoint experiences and cannot exceed 2048*2048, it is by design.
However, you can adopt the following workaround
1.Upload the image to your SharePoint
2.Create Wiki Page or Web Part Page in your SharePoint.
3.On the Wiki page, click INSERT >> Embed Code, paste the below code to the Embed pop-up-box.
<img src="/sites/Echo/Picture/Test.png?Width=7952&Height=5304" />
4.On the Web Part page, click Add a Web Part. Please add the Script Editor webpart and paste the below code to the Embed pop-up-box.
<img src="/sites/Echo/Picture/Test.png?Width=7952&Height=5304" />
Thanks,
Echo Du
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