fa-filter/manifest.json

{
    "name": "__MSG_extName__",
    "version": "1.0",
    "default_locale": "en",
    "description": "__MSG_extDesc__",
    "author": "chemicalcrux",
    "permissions": [
        "tabs",
        "*://www.furaffinity.net/",
        "storage"
    ],
    "web_accessible_resources": [
        "inject.js"
    ],
    "background": {
        "scripts": ["background.js"]
    },
    "content_scripts": [
        {
            "run_at": "document_start",
            "matches": ["*://www.furaffinity.net/"],
            "js": ["filter.js"]
        },
        {
            "run_at": "document_end",
            "matches": ["*://www.furaffinity.net/"],
            "js": ["run-filter.js"]
        }
    ],
    "browser_action": {
        "default_popup": "config.html"
    },
    "manifest_version": 2
}