Safari, the default browser available in iOS has a feature that lets you add a website bookmark to your Home Screen.
The bookmark visually looks like an app icon and when tapped, opens the webpage in Safari. The website favicon is used to represent the app icon. However, unlike Safari bookmarks which syncs across all your Apple devices, this one appears only on the iOS device that you add it on.
To add a webpage bookmark on your iOS Home screen:
Open the webpage in Safari.
Tap on the Share button. In the bottom row, tap on Add to Home Screen
If needed, edit the name of shown below the bookmark icon. Webpage title is used by default.
Tap Add and you are done. The webpage bookmark is now added to the iOS Home screen. If need be, it can be easily removed by following the same procedure to uninstall app (tap and hold until the icon wiggles, tap on ⓧ button at top left of the icon).