Examine source code of In Zoom

{
  "name": "In Zoom",
  "version": "1.32",
  "description": "Zoom in and out on images and videos using shift + mouse wheel and by other ways.",
  "permissions": [
    "storage",
    "contextMenus"
  ],
  "homepage_url": "https://kpion.github.io/inzoom/",
  "browser_action": {
    "default_popup": "browserAction/index.html",
    "default_icon": {
      "16": "static/images/camera_lens_128.png",
      "32": "static/images/camera_lens_128.png",
      "48": "static/images/camera_lens_128.png",
      "128": "static/images/camera_lens_128.png"
    },
    "default_title": "In Zoom - zoom in / out on images and videos"
  },
  "background": {
    "page": "background/index.html"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "common/app.js",
        "lib/lightdom.js",
        "lib/config.js",
        "lib/hamster.js",
        "lib/point.js",
        "inzoom/inzoom.js"
      ],
      "css": [
        "inzoom/style.css"
      ],
      "run_at": "document_start",
      "all_frames": true
    }
  ],
  "options_ui": {
    "page": "options/index.html",
    "open_in_tab": true
  },
  "icons": {
    "16": "static/images/camera_lens_128.png",
    "32": "static/images/camera_lens_128.png",
    "48": "static/images/camera_lens_128.png",
    "128": "static/images/camera_lens_128.png"
  },
  "manifest_version": 2
}