Examine source code of screenshoot-sj

{
  "manifest_version": 2,
  "name": "screenshoot",
  "version": "1",
  "homepage_url": "https://sampaijauh.com",
  "description": "screenshoot",
  "applications": {
    "gecko": {
      "id": "{49bd4b24-e5b9-4238-a241-3487486f9231}",
      "strict_min_version": "56.0"
    }
  },
  "icons": {
    "24": "icons/savescreenshot.svg",
    "48": "icons/savescreenshot.svg",
    "96": "icons/savescreenshot.svg"
  },
  "background": {
    "scripts": [
      "utils/storage.js",
      "_globals.js",
      "lib/crc32.js",
      "imagecomments.js",
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": "icons/savescreenshot.svg",
    "browser_style": true,
    "default_popup": "popup/choose_format.html",
    "theme_icons": [
      {
        "dark": "icons/savescreenshot.svg",
        "light": "icons/savescreenshot-light.svg",
        "size": 19
      }
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "utils/storage.js",
        "contentscript.js"
      ]
    }
  ],
  "options_ui": {
    "page": "options.html",
    "browser_style": true
  },
  "commands": {
    "full-png": {
      "description": "__MSG_region_full_label__ (PNG)"
    },
    "full-jpg": {
      "description": "__MSG_region_full_label__ (JPEG)"
    },
    "full-copy": {
      "description": "__MSG_region_full_label__ (__MSG_format_copy_label__)"
    },
    "viewport-png": {
      "description": "__MSG_region_viewport_label__ (PNG)"
    },
    "viewport-jpg": {
      "description": "__MSG_region_viewport_label__ (JPEG)"
    },
    "viewport-copy": {
      "description": "__MSG_region_viewport_label__ (__MSG_format_copy_label__)"
    },
    "selection-png": {
      "description": "__MSG_region_selection_label__ (PNG)"
    },
    "selection-jpg": {
      "description": "__MSG_region_selection_label__ (JPEG)"
    },
    "selection-copy": {
      "description": "__MSG_region_selection_label__ (__MSG_format_copy_label__)"
    }
  },
  "permissions": [
    "<all_urls>",
    "contextMenus",
    "notifications",
    "storage",
    "tabs",
    "downloads",
    "clipboardWrite"
  ],
  "default_locale": "en"
}