Easy Percentage Calculator

Calculate percentages based on inputs such as ratios, fractions, grades and percentage increase/decrease.

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manifest.json

{
  "manifest_version": 2,
  "name": "Percentage Calculator",
  "description": "Calculate percentages based on inputs such as ratios, fractions, grades and percentage increase/decrease.",
  "version": "1.0.0",
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "Percentage Calculator"
  },
  "icons": {
    "16": "img/icon16.png",
    "32": "img/icon32.png",
    "64": "img/icon64.png",
    "128": "img/icon128.png"
  }
}