Simple Image Viewer

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Simple Image Viewer",
  "description": "Simple Image Viewer",
  "minimum_chrome_version": "40",
  "version": "3.0",
  "app": {
    "background": {
      "scripts": [
        "js/background.js"
      ]
    }
  },
  "file_handlers": {
    "any": {
      "extensions": [
        "jpg",
        "jpeg",
        "png",
        "gif",
        "bmp",
        "webp"
      ]
    }
  },
  "icons": {
    "16": "img/icon16.png",
    "48": "img/icon48.png",
    "128": "img/icon128.png"
  },
  "permissions": [
    {
      "fileSystem": [
        "write",
        "directory",
        "retainEntries"
      ]
    },
    "storage",
    "fullscreen",
    "alwaysOnTopWindows",
    "contextMenus",
    "identity",
    "https://api.instagram.com/*",
    "<all_urls>"
  ]
}