Download Image from Context Menu

manifest.json

{
  "manifest_version": 2,
  "name": "Download Image from Context Menu",
  "description": "Adds a context (Right click) menu item to images which allows you to directly download them without a prompt.",
  "version": "1.0.6",
  "default_locale": "en",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "page": "options.html"
  },
  "permissions": [
    "contextMenus",
    "downloads",
    "storage",
    "webRequest"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{5ff1cbc2-229c-4f3f-ac0e-884fbc12670b}",
      "strict_min_version": "56.0"
    }
  },
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "64": "icons/icon-64.png",
    "128": "icons/icon-128.png"
  },
  "update_url": "https://edge.microsoft.com/extensionwebstorebase/v1/crx"
}