Is it my pc or both Coracle and Iris are very slow to load in chrome?

Is there a free web REST service that allow me to post a btc address, a lightning invoice, and then return a response with both qr codes? Kind of like btcpay server but for any bitcoin address and any lightning backend. I am planning to build one that will do that, and also will check the payment status using the specific onchain and lightning service API. However I do not want to if there is already something like that. It is just a machine that will: - Receive a BTC address, a lightning invoice, the bitcoin/lightning service URL, and an API key for querying status. - Display those QR's in a BTCPay style - Query with a bunch of GET requests the payment status and wait till the status changes - Update the screen indicating the success - Return to the original site (any site that is using this service)