Downloading websites for offline use

I have a website I want available when I don’t have service. It’s purely static content. I found the app HTTrack Website Copier which appeared to be what I wanted, although it hasn’t been updated in years.

Despite some annoyances it produced a complete copy–but I can’t make the copy work on the phone. Copying the data over to my PC shows everything’s actually there, I can browse it fine. From what I’m reading about Android it seems my problem is due to enhancements to Android’s security isolating apps from each other and thus not letting me point any browser at the downloaded data.

Is there some way to make this work or did I download a 2.3gb paperweight?