Reverse Tax Calculator

A simple add-on that calculates the price before tax and the amount of tax paid.

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manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 3,
  "name": "Reverse Tax Calculator",
  "version": "1.0",
  "description": "A simple add-on that calculates the price before tax and the amount of tax paid.",
  "icons": {
    "48": "assets/ledger48.png"
  },
  "action": {
    "default_icon": {
      "16": "assets/ledger16.png",
      "32": "assets/ledger32.png",
      "48": "assets/ledger48.png",
      "64": "assets/ledger64.png",
      "128": "assets/ledger128.png",
      "256": "assets/ledger256.png",
      "512": "assets/ledger512.png"
    },
    "default_title": "Simple Tax Calculator",
    "default_popup": "taxcalculator.html"
  },
  "permissions": []
}