Examine source code of OneImage Resize

{
  "manifest_version": 2,
  "name": "OneImage Resize",
  "description": "Resize images, export optimized dimensions, and jump into the full OneImage studio.",
  "version": "1.0.0",
  "short_name": "Resize",
  "icons": {
    "16": "icon/16.png",
    "32": "icon/32.png",
    "48": "icon/48.png",
    "96": "icon/96.png",
    "128": "icon/128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "resize@oneimage.co",
      "strict_min_version": "109.0"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "OneImage Resize",
    "default_popup": "popup.html"
  }
}