Examine source code of EcoSurf

{
  "manifest_version": 2,
  "name": "EcoSurf",
  "description": "Surf climate friendly!",
  "version": "1.0",
  "author": "EcoSurf Team",
  "content_scripts": [
    {
      "matches": [
        "https://*/*"
      ],
      "js": [
        "contentScript.js"
      ],
      "run_at": "document_end"
    }
  ],
  "action": {
    "default_popup": "popup.html",
    "script": "popup.js"
  },
  "web_accessible_resources": [
    "assets/bg.svg",
    "assets/bgsi.svg",
    "assets/bgsispeed.svg",
    "assets/bgspeed.svg",
    "assets/bsispeed.svg",
    "assets/bspeed.svg",
    "assets/b.svg",
    "assets/bsi.svg"
  ],
  "icons": {
    "16": "assets/16.png",
    "48": "assets/48.png",
    "128": "assets/128.png"
  },
  "permissions": [
    "scripting",
    "tabs",
    "webRequest",
    "<all_urls>"
  ],
  "applications": {
    "gecko": {
      "id": "team@ecosurf.io"
    }
  }
}