Examine source code of moarTLS

{
  "manifest_version": 2,
  "name": "moarTLS Analyzer",
  "short_name": "moarTLS",
  "description": "Analyze webpages for non-secure link references.",
  "version": "0.1.6.1resigned1",
  "author": "Eric Lawrence (@ericlaw)",
  "options_ui": {
    "page": "options.html",
    "chrome_style": true
  },
  "minimum_chrome_version": "50",
  "applications": {
    "gecko": {
      "id": "moarTLS@bayden.com",
      "strict_min_version": "48.0"
    }
  },
  "minimum_edge_version": "38.14393.0.0",
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Alt+M"
      }
    }
  },
  "icons": {
    "16": "images/icon16.png",
    "32": "images/icon32.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  },
  "browser_action": {
    "default_icon": {
      "19": "images/icon19.png",
      "38": "images/icon38.png"
    },
    "default_popup": "popup.html",
    "default_title": "Mark non-secure links"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "web_accessible_resources": [
    "images/SensitiveForm.png"
  ],
  "permissions": [
    "tabs",
    "activeTab",
    "storage",
    "<all_urls>",
    "downloads"
  ]
}