# How to inject custom Javascript in iOS Safari

Hyperweb lets you inject a (supported subset of) Greasemonkey scripts into any page. This is a free feature.

You can do this from Popular > Custom Scripts.

From here you can enable a suggested user script or add your own from a valid .js URL, e.g. https://raw.githubusercontent.com/insightbrowser/scripts/main/probable_adblock.js

• Supported Greasemonkey metadata:

  • include
  • match
  • exclude
  • require
  • resource

• Supported Greasemonkey functions:

  • GM_getResourceText
  • GM_getResourceURL
  • GM_addStyle