is there any tool, which will generate the product (webpage) explainer video?

Think Supademo (https://supademo.com/) can do this. @supademo_joe @koushik_marka2 can help out here

We're working on a tool that can help you with this. I'm sending you a LinkedIn request; let's connect there.

Highly recommend Descirpt and Animaker

Why not use Loom? Or use my preferred tool, dropbox capture

Well, there are lots of tools that can generate product explainer videos, such as Wideo, Animaker, Adobe Spark, Bitable, and many more. Thanks

Great question to ask!