Instagram Image Downloader

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Instagram Image Downloader",
  "version": "0.2",
  "description": "Download Instagram post page image",
  "browser_action": {
    "default_title": "download instagram image",
    "default_icon": "icon.png"
  },
  "permissions": [
    "activeTab",
    "downloads"
  ],
  "icons": {
    "128": "icon.png"
  },
  "background": {
    "scripts": [
      "js/script.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "http://www.instagram.com/*",
        "https://www.instagram.com/*"
      ],
      "js": [
        "js/contents.js"
      ]
    }
  ]
}