Greasemonkey for IE: Best User Script Managers and Setup Guide

Option B — Manual conversion to run in IE (recommended)

1. Remove/replace Greasemonkey metadata:

   • Delete or keep the header comment block (// ==UserScript== … // ==/UserScript==).
   • Note @match/@include patterns — IE injection will need equivalent URL matching logic.

2. Replace Greasemonkey-specific APIs:

   • GM_getValue / GM_setValue: replace with localStorage (synchronous) or IE userData (legacy). Example:
     • GM_getValue(key, def) → JSON.parse(localStorage.getItem(key) ?? JSON.stringify(def))
     • GM_setValue(key, val) → localStorage.setItem(key, JSON.stringify(val))
   • GM_xmlhttpRequest: replace with XMLHttpRequest or fetch (IE11 supports XHR; fetch polyfill needed).
   • GM_addStyle: create aelement and append to document.head.
   • GM_registerMenuCommand / GMopenInTab: remove or implement via UI controls and window.open.

3. Ensure correct execution context:

   • Greasemonkey scripts may run in page scope or sandbox. For IE, inject code into page context by creating a element containing your script and appending it to the document — this exposes page JS objects.
   • If using a manager that runs in an extension context, keep that in mind and adapt DOM access accordingly.

4. Adapt modern JS features:

   • Replace unsupported ES2015+ features (arrow functions, let/const, Promise without polyfill) for IE11 compatibility, or include polyfills/transpile with Babel.

5. Implement URL matching and injection:

   • Create a small IE-compatible bootstrap that checks window.location against your @match patterns (use RegExp) and runs the converted script when matched.

6. Packaging/deployment:

   • If you manage IE via enterprise means, package as an ActiveX/Browser Helper Object or use group-policy to push an injected script via an intranet proxy. (These are advanced and platform-specific.)
   • Simpler: host the script on a local intranet page and instruct users to install a small bookmarklet or favorites entry that injects the script when clicked.

javascript
 ffON2NH02oMAcqyoh2UU MQCbz04ET5EljRmK3YpQ CPXAhl7VTkj2dHDyAYAf” data-copycode=“true” role=“button” aria-label=“Copy Code”>Copy CodeCopied
(function(){
  var src = ”(” + function(){
    // page-context code here (no GM_ calls)
    document.body.style.border = ‘5px solid red’;
  } + ”)();”;
  var s = document.createElement(‘script’);
  s.type = ‘text/javascript’;
  s.text = src;
  (document.head||document.documentElement).appendChild(s);
  s.parentNode.removeChild(s);
})();

Notes and caveats

• IE is deprecated and many modern web APIs or libraries won’t work; converting complex scripts can be time-consuming.
• Security: injecting scripts or using legacy packaging (BHO/ActiveX) can introduce security risks. Prefer migrating users to modern browsers with userscript managers.

If you want, I can convert a specific .user.js file for you to IE-compatible code—paste the script and I’ll produce a converted version.