Examine source code of Blur Tab

{
  "manifest_version": 2,
  "name": "Blur Tab",
  "description": "Opens a random blur image in new tab, which can be viewed.",
  "homepage_url": "https://github.com/nabendu82/Blur-tab",
  "version": "1.1resigned1",
  "icons": {
    "32": "icons/logo_32.png",
    "64": "icons/logo_64.png"
  },
  "chrome_url_overrides": {
    "newtab": "tabs.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c30147e7-b8cc-4e2c-9ca7-7a4f5ac422af}"
    }
  }
}