Examine source code of Libre Redirect

{
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDescription__",
  "version": "2.6.2",
  "manifest_version": 2,
  "browser_specific_settings": {
    "gecko": {
      "id": "suwako@076.moe",
      "strict_min_version": "67.0"
    }
  },
  "background": {
    "page": "pages/background/background.html",
    "persistent": true
  },
  "icons": {
    "16": "assets/images/libreredirect-16.png",
    "32": "assets/images/libreredirect-32.png",
    "48": "assets/images/libreredirect-48.png",
    "128": "assets/images/libreredirect-128.png"
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "storage",
    "clipboardWrite",
    "contextMenus",
    "<all_urls>"
  ],
  "optional_permissions": [
    "bookmarks"
  ],
  "browser_action": {
    "default_title": "__MSG_extensionName__",
    "browser_style": false,
    "default_popup": "pages/popup/popup.html",
    "default_icon": {
      "16": "assets/images/libreredirect-16.png",
      "32": "assets/images/libreredirect-32.png",
      "48": "assets/images/libreredirect-48.png",
      "128": "assets/images/libreredirect-128.png"
    }
  },
  "options_ui": {
    "page": "pages/options/index.html",
    "browser_style": false,
    "open_in_tab": true
  },
  "chrome_settings_overrides": {
    "search_provider": {
      "name": "__MSG_extensionName__",
      "keyword": "@libreredirect",
      "favicon_url": "https://gitler.moe/suwako/libreredirect/raw/branch/master/src/assets/images/libreredirect-16.png",
      "search_url": "https://search.libreredirect.invalid/?q={searchTerms}",
      "encoding": "UTF-8",
      "is_default": false
    }
  },
  "commands": {
    "switchInstance": {
      "suggested_key": {
        "default": "Alt+Shift+L"
      },
      "description": "__MSG_switchInstance__"
    },
    "copyRaw": {
      "suggested_key": {
        "default": "Alt+Shift+C"
      },
      "description": "Copies the original link. Ex: Copies the original twitter link while in the nitter website"
    },
    "reverse": {
      "suggested_key": {
        "default": "Alt+Shift+O"
      },
      "description": "Redirect to the original link. Ex: Redirects to the original twitter link while in the nitter website"
    },
    "redirect": {
      "suggested_key": {
        "default": "Alt+Shift+R"
      },
      "description": "Redirect link. Ex: Redirects original twitter link to nitter"
    }
  },
  "default_locale": "en",
  "update_url": "https://gitler.moe/suwako/libreredirect/raw/branch/master/src/updates/updates.xml",
  "key": "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAroWDSoSRZ1scj+eJRrvnhJbrqXTKnhQuxs6+AJg16sqr0bsMdFV+MSY4i4xnK+K5WOYkBliWXgUyk/wzicoAjOnSJddrL/Md4FuWHI2NVIkrlsLOrYkygi5OLqGPajRH/w8Cdmg7KzEpXe/OnYV0/qS8li8huEdTzdeLdhfbiVl1j3DOr4OJALQ7mPeeNFHFo/oVQ+OkSezWLezA5jUGfhtzPYV6u1TXzX7lCi8E/BbDbwkvvXOMcjXCv08kjdLOY2djCA2a6zr0xAb3q8DlexAMZ8vMof7AQRFtBKhLc9n9VFoipMMdBOVQQj/eIcRILBrmkcZNnJxFKiHNJ+NcZQIDAQAB"
}