Pixiv Ugoira WebM

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Pixiv Ugoira WebM",
  "description": "Converts Pixiv Ugoira Animations to WebM video files.",
  "version": "0.1.1",
  "minimum_chrome_version": "46",
  "icons": {
    "16": "Image/16.png",
    "48": "Image/48.png",
    "128": "Image/128.png"
  },
  "options_page": "Extension/Options.html",
  "background": {
    "persistent": true,
    "scripts": [
      "Common/Thirdparty/jquery-2.2.4.js",
      "Extension/Background.js"
    ]
  },
  "page_action": {
    "default_icon": {
      "19": "Image/19.png",
      "38": "Image/38.png"
    },
    "default_title": "Pixiv Ugoira WebM",
    "default_popup": "Extension/Options.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.pixiv.net/*"
      ],
      "css": [
        "ContentScript/PUW.css"
      ],
      "js": [
        "Common/Thirdparty/jquery-2.2.4.js",
        "Common/jQueryPlugins.js",
        "Common/Thirdparty/zip/zip.js",
        "Common/Thirdparty/zip/zip-ext.js",
        "Common/Thirdparty/zip/deflate.js",
        "Common/Thirdparty/zip/inflate.js",
        "Common/Thirdparty/whammy.js",
        "Common/Thirdparty/GIFEncoder/LZWEncoder.js",
        "Common/Thirdparty/GIFEncoder/NeuQuant.js",
        "Common/Thirdparty/GIFEncoder/GIFEncoder.js",
        "Common/Thirdparty/GIFEncoder/b64.js",
        "ContentScript/PUW.js"
      ]
    }
  ],
  "externally_connectable": {
    "matches": [
      "*://*.pixiv.net/*"
    ]
  },
  "permissions": [
    "tabs",
    "storage",
    "downloads",
    "*://*.pixiv.net/*"
  ],
  "web_accessible_resources": [
    "PageScript/PUWPageScript.js",
    "Image/ConvertButton_32.png",
    "Image/ConvertButton_48.png",
    "Image/header.png"
  ]
}