Examine source code of GooglePanicImages

{
  "developer": {
    "name": "Jan Riechers",
    "url": "https://github.com/jrie"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{cef89dc3-7bbd-48c7-a43e-b1e8f9cffb9e}"
    }
  },
  "action": {
    "default_title": "googlePanicImage",
    "default_popup": "popup.html",
    "default_icon": {
      "32": "icons/gpi_32_32.png",
      "64": "icons/gpi_64_64.png",
      "128": "icons/gpi_128_128.png"
    }
  },
  "options_ui": {
    "page": "popup.html"
  },
  "description": "Displays a 'view' link, 'image dimensions'  and 'picture size' on hover at images of Google image search and search.",
  "homepage_url": "https://github.com/jrie/googlePanicImage",
  "manifest_version": 3,
  "name": "GooglePanicImages",
  "version": "4.2.0",
  "permissions": [
    "tabs",
    "scripting",
    "storage"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "host_permissions": [
    "*://www.google.com/*",
    "*://www.google.ad/*",
    "*://www.google.ae/*",
    "*://www.google.com.af/*",
    "*://www.google.com.ag/*",
    "*://www.google.al/*",
    "*://www.google.am/*",
    "*://www.google.co.ao/*",
    "*://www.google.com.ar/*",
    "*://www.google.as/*",
    "*://www.google.at/*",
    "*://www.google.com.au/*",
    "*://www.google.az/*",
    "*://www.google.ba/*",
    "*://www.google.com.bd/*",
    "*://www.google.be/*",
    "*://www.google.bf/*",
    "*://www.google.bg/*",
    "*://www.google.com.bh/*",
    "*://www.google.bi/*",
    "*://www.google.bj/*",
    "*://www.google.com.bn/*",
    "*://www.google.com.bo/*",
    "*://www.google.com.br/*",
    "*://www.google.bs/*",
    "*://www.google.bt/*",
    "*://www.google.co.bw/*",
    "*://www.google.by/*",
    "*://www.google.com.bz/*",
    "*://www.google.ca/*",
    "*://www.google.cd/*",
    "*://www.google.cf/*",
    "*://www.google.cg/*",
    "*://www.google.ch/*",
    "*://www.google.ci/*",
    "*://www.google.co.ck/*",
    "*://www.google.cl/*",
    "*://www.google.cm/*",
    "*://www.google.cn/*",
    "*://www.google.com.co/*",
    "*://www.google.co.cr/*",
    "*://www.google.com.cu/*",
    "*://www.google.cv/*",
    "*://www.google.com.cy/*",
    "*://www.google.cz/*",
    "*://www.google.de/*",
    "*://www.google.dj/*",
    "*://www.google.dk/*",
    "*://www.google.dm/*",
    "*://www.google.com.do/*",
    "*://www.google.dz/*",
    "*://www.google.com.ec/*",
    "*://www.google.ee/*",
    "*://www.google.com.eg/*",
    "*://www.google.es/*",
    "*://www.google.com.et/*",
    "*://www.google.fi/*",
    "*://www.google.com.fj/*",
    "*://www.google.fm/*",
    "*://www.google.fr/*",
    "*://www.google.ga/*",
    "*://www.google.ge/*",
    "*://www.google.gg/*",
    "*://www.google.com.gh/*",
    "*://www.google.com.gi/*",
    "*://www.google.gl/*",
    "*://www.google.gm/*",
    "*://www.google.gr/*",
    "*://www.google.com.gt/*",
    "*://www.google.gy/*",
    "*://www.google.com.hk/*",
    "*://www.google.hn/*",
    "*://www.google.hr/*",
    "*://www.google.ht/*",
    "*://www.google.hu/*",
    "*://www.google.co.id/*",
    "*://www.google.ie/*",
    "*://www.google.co.il/*",
    "*://www.google.im/*",
    "*://www.google.co.in/*",
    "*://www.google.iq/*",
    "*://www.google.is/*",
    "*://www.google.it/*",
    "*://www.google.je/*",
    "*://www.google.com.jm/*",
    "*://www.google.jo/*",
    "*://www.google.co.jp/*",
    "*://www.google.co.ke/*",
    "*://www.google.com.kh/*",
    "*://www.google.ki/*",
    "*://www.google.kg/*",
    "*://www.google.co.kr/*",
    "*://www.google.com.kw/*",
    "*://www.google.kz/*",
    "*://www.google.la/*",
    "*://www.google.com.lb/*",
    "*://www.google.li/*",
    "*://www.google.lk/*",
    "*://www.google.co.ls/*",
    "*://www.google.lt/*",
    "*://www.google.lu/*",
    "*://www.google.lv/*",
    "*://www.google.com.ly/*",
    "*://www.google.co.ma/*",
    "*://www.google.md/*",
    "*://www.google.me/*",
    "*://www.google.mg/*",
    "*://www.google.mk/*",
    "*://www.google.ml/*",
    "*://www.google.com.mm/*",
    "*://www.google.mn/*",
    "*://www.google.com.mt/*",
    "*://www.google.mu/*",
    "*://www.google.mv/*",
    "*://www.google.mw/*",
    "*://www.google.com.mx/*",
    "*://www.google.com.my/*",
    "*://www.google.co.mz/*",
    "*://www.google.com.na/*",
    "*://www.google.com.ng/*",
    "*://www.google.com.ni/*",
    "*://www.google.ne/*",
    "*://www.google.nl/*",
    "*://www.google.no/*",
    "*://www.google.com.np/*",
    "*://www.google.nr/*",
    "*://www.google.nu/*",
    "*://www.google.co.nz/*",
    "*://www.google.com.om/*",
    "*://www.google.com.pa/*",
    "*://www.google.com.pe/*",
    "*://www.google.com.pg/*",
    "*://www.google.com.ph/*",
    "*://www.google.com.pk/*",
    "*://www.google.pl/*",
    "*://www.google.pn/*",
    "*://www.google.com.pr/*",
    "*://www.google.ps/*",
    "*://www.google.pt/*",
    "*://www.google.com.py/*",
    "*://www.google.com.qa/*",
    "*://www.google.ro/*",
    "*://www.google.ru/*",
    "*://www.google.rw/*",
    "*://www.google.com.sa/*",
    "*://www.google.com.sb/*",
    "*://www.google.sc/*",
    "*://www.google.se/*",
    "*://www.google.com.sg/*",
    "*://www.google.sh/*",
    "*://www.google.si/*",
    "*://www.google.sk/*",
    "*://www.google.com.sl/*",
    "*://www.google.sn/*",
    "*://www.google.so/*",
    "*://www.google.sm/*",
    "*://www.google.sr/*",
    "*://www.google.st/*",
    "*://www.google.com.sv/*",
    "*://www.google.td/*",
    "*://www.google.tg/*",
    "*://www.google.co.th/*",
    "*://www.google.com.tj/*",
    "*://www.google.tl/*",
    "*://www.google.tm/*",
    "*://www.google.tn/*",
    "*://www.google.to/*",
    "*://www.google.com.tr/*",
    "*://www.google.tt/*",
    "*://www.google.com.tw/*",
    "*://www.google.co.tz/*",
    "*://www.google.com.ua/*",
    "*://www.google.co.ug/*",
    "*://www.google.co.uk/*",
    "*://www.google.com.uy/*",
    "*://www.google.co.uz/*",
    "*://www.google.com.vc/*",
    "*://www.google.co.ve/*",
    "*://www.google.co.vi/*",
    "*://www.google.com.vn/*",
    "*://www.google.vu/*",
    "*://www.google.ws/*",
    "*://www.google.rs/*",
    "*://www.google.co.za/*",
    "*://www.google.co.zm/*",
    "*://www.google.co.zw/*",
    "*://www.google.cat/*"
  ]
}