Music Score Downloader

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "description": "This extension allows you to download sheets, audio and midi files",
  "version": "0.5.5",
  "manifest_version": 3,
  "name": "Music Score Downloader",
  "icons": {
    "16": "icon-16.png",
    "32": "icon-32.png",
    "48": "icon-48.png",
    "128": "icon-128.png"
  },
  "permissions": [
    "webRequest"
  ],
  "host_permissions": [
    "https://musescore.com/*",
    "https://s3.ultimate-guitar.com/musescore.scoredata/g/*"
  ],
  "action": {
    "default_popup": "popup.html"
  },
  "background": {
    "service_worker": "background.js"
  },
  "content_scripts": [
    {
      "matches": [
        "https://musescore.com/*"
      ],
      "run_at": "document_start",
      "js": [
        "content.js"
      ]
    }
  ]
}