Tool/ workaround for testing locally stored Webpage on iPhone

I need to test a webpage on iPhone. Due to some security/IT regulations, I'm not allowed to use cloud services (especially US-based 8-) , because I'm working for a big company in Europe). So I'm looking for a way to store my webpage on the iPhone and enter it locally (and avoiding Internet access). I already managed it for Android by use of Firefox browser.

-> Does someone know a testing tool for accessing a locally stored webpage on iPhone?

-> Or does someone know a way to test a webpage on iPhone avoiding cloud/Internet access?

I have already seen Offline Browser in iTunes store, but this app looks suspicious.