Examine source code of Cosy Reader

{
  "icons": {
    "16": "icon16.plasmo.e422ca3e.png",
    "32": "icon32.plasmo.1cfff917.png",
    "48": "icon48.plasmo.919a2e57.png",
    "64": "icon64.plasmo.c820e3b3.png",
    "128": "icon128.plasmo.80ac0f76.png"
  },
  "manifest_version": 3,
  "action": {
    "default_icon": {
      "16": "icon16.plasmo.e422ca3e.png",
      "32": "icon32.plasmo.1cfff917.png",
      "48": "icon48.plasmo.919a2e57.png",
      "64": "icon64.plasmo.c820e3b3.png",
      "128": "icon128.plasmo.80ac0f76.png"
    },
    "default_popup": "popup.html"
  },
  "version": "1.2.4",
  "author": "Aroniaina Andriamaro",
  "name": "Cosy Reader",
  "description": "Save any web page to your Cosy Reader library with one click. Bookmark articles, blogs, and newsletters for later reading.",
  "permissions": [
    "storage",
    "tabs"
  ],
  "browser_specific_settings": {
    "gecko": {
      "data_collection_permissions": {
        "optional": [],
        "required": [
          "none"
        ]
      },
      "id": "cosy-reader-extension@cosyreader.com",
      "strict_min_version": "142.0"
    }
  },
  "host_permissions": [
    "https://api.cosyreader.com/*"
  ]
}