Merlin
n'alt text

n'alt text

See where image alt text is present, and give the middle finger where it's missing.

Merlin
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manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "n'alt text",
  "version": "0.2.0",
  "manifest_version": 2,
  "description": "See where image alt text is present, and give the middle finger where it's missing.",
  "icons": {
    "128": "icon_128.png"
  },
  "default_locale": "en",
  "background": {
    "scripts": [
      "src/bg/background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_title": "n'alt it!"
  },
  "permissions": [
    "activeTab"
  ]
}