Examine source code of Le Même en Local

{
  "name": "Le Même en Local",
  "description": "La façon la plus simple de trouver des alternatives locales, en un seul clic. Gratuit et sans publicité.",
  "version": "3.97.3",
  "manifest_version": 2,
  "icons": {
    "16": "img/logo/lmel/16x16.png",
    "48": "img/logo/lmel/48x48.png",
    "128": "img/logo/lmel/128x128.png"
  },
  "background": {
    "page": "background.html"
  },
  "content_scripts": [
    {
      "exclude_globs": [
        "*.pdf*",
        "*.Pdf*",
        "*.PDF*",
        "*.jpeg*",
        "*.jpg*",
        "*.png*",
        "*.gif*"
      ],
      "matches": [
        "*://*/*"
      ],
      "exclude_matches": [
        "*://*.googleusercontent.com/viewer/secure/pdf/*",
        "*://*.cdn.mozilla.net/*",
        "*://*.accounts.firefox.com/*",
        "*://*.addons.mozilla.org/*",
        "*://*.input.mozilla.org/*",
        "*://*.install.mozilla.org/*",
        "*://*.support.mozilla.org/*",
        "*://*.services.mozilla.org/*",
        "*://*.testpilot.firefox.com/*"
      ],
      "js": [
        "js/browser-polyfill.js",
        "js/content.bundle.js"
      ],
      "run_at": "document_end"
    }
  ],
  "browser_action": {
    "default_icon": {
      "16": "img/logo/lmel/16x16.png",
      "48": "img/logo/lmel/48x48.png",
      "128": "img/logo/lmel/128x128.png"
    },
    "default_title": "Le Même en Local"
  },
  "permissions": [
    "activeTab",
    "storage",
    "contextMenus",
    "*://*/*"
  ],
  "web_accessible_resources": [
    "img/*",
    "fonts/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{98492331-692c-4e00-8ed1-870fe75c0e52}"
    }
  }
}