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manifest.json
{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Planboard by Chalk.com - Free Lesson Planner",
  "short_name": "Planboard",
  "description": "Planboard by Chalk.com is a free lesson planner for teachers.",
  "version": "3.1",
  "manifest_version": 2,
  "icons": {
    "128": "logo.png"
  },
  "author": "Chalk.com Education Inc.",
  "app": {
    "launch": {
      "web_url": "https://www.chalk.com/auth/google?origin=https://planboard.chalk.com"
    }
  }
}