Twim

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Twim",
  "version": "0.3.0",
  "description": "a twitter image downloader chrome extension",
  "icons": {
    "128": "icon-enable.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://twitter.com/*"
      ],
      "js": [
        "twim.js"
      ]
    }
  ],
  "browser_action": {
    "default_icon": "icon-disable.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "permissions": [
    "tabs",
    "background",
    "downloads",
    "https://twitter.com/*"
  ],
  "options_page": "twim_options.html",
  "web_accessible_resources": [
    "icon-enable.png"
  ]
}