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Web Modding for Opera GX Mods

Guide to modifying web pages within Opera GX using your mod.

Web modding allows you to customize web pages with animations, transitions, and other visual effects. This guide explains how to implement web modding in your Opera GX mod.

🎨 Adding Web Modding

Web Modding Format

Web modding effects are typically .css files that are correctly formatted and placed in the appropriate directory.

Update manifest.json

manifest.json 
{
  "page_styles": [
    {
      "id": "\u003Cbuilt-in function id>",
      "name": "Main Theme",
      "css": ["webmodding/main.theme.css", "webmodding/opera.css"],
      "matches": ["https://*.opera.com/*"]
    }
  ]
}

Add CSS Files

Create .css files with your custom styles and animations. Ensure that the files are correctly formatted and placed in the appropriate directory.

webmodding/main.theme.css 
body {
  background-color: #000;
  color: #fff;
}

🔄 Pro Tips

  • Test web modding effects for performance.
  • Keep web modding effects minimal to avoid overwhelming the UI.
  • Use web modding to enhance the browsing experience for users.
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