Examine source code of Blurred Image Sharing

{
  "manifest_version": 2,
  "name": "Name",
  "description": "__MSG_description__",
  "version": "1.0",
  "icons": {
    "32": "icons/logo_32.png",
    "64": "icons/logo_64.png"
  },
  "chrome_url_overrides": {
    "newtab": "tabs.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "strict_min_version": "55.0a2",
      "id": "{cb6cf23e-5ed1-4171-9a8f-10e16437a4de}"
    }
  }
}