Hello @dhavalvyas, natively there is no way I can think about to create a button with that function (unless you develop an extension, which in that case may be possible). The fastest thing I can think about would be to create a story including all charts you need to export and then download it as a PDF. More information here: Downloading app content.
If you are using Qlik Cloud you could also create an Automation to export a report from the App and then trigger it from the Sheet with a button using the action "Execute automation".
If the issue is solved please mark the answer with Accept as Solution.
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