Examine source code of ShareText

{
  "manifest_version": 3,
  "name": "ShareText",
  "version": "1.0.0",
  "description": "Quickly share text/link from your browser to your phone using QR codes. Just select, generate, and scan!",
  "permissions": [
    "contextMenus",
    "activeTab",
    "storage",
    "tabs"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "16": "icon.png",
    "48": "icon.png",
    "128": "icon.png"
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "sharetext@ktauchathuranga.github.io",
      "strict_min_version": "109.0"
    }
  }
}