I was looking for ways to open sepcific UPI apps from chrome using deeplink for payment, because if you click on a deeplink in mobile browser, it will open a bottomsheet showing all available apps that can understand the deeplink.

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then I found this documentation It had most of details to create a intent from browser, however I couldn’t found more details about scheme there. after trying different schemes values following format worked for me.

const url  = `intent://${paymentLink}#Intent;scheme=upi://pay;package=${appPackageName};end`

here is some sample code for reference.