Buttercup

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 3,
  "name": "Buttercup",
  "description": "Browser extension for Buttercup, the secure and easy-to-use password manager.",
  "version": "3.2.0",
  "icons": {
    "16": "manifest-res/buttercup-16.png",
    "48": "manifest-res/buttercup-48.png",
    "128": "manifest-res/buttercup-128.png",
    "256": "manifest-res/buttercup-256.png"
  },
  "background": {
    "service_worker": "background.js"
  },
  "action": {
    "default_title": "Buttercup",
    "default_icon": "manifest-res/buttercup-256.png",
    "default_popup": "/popup.html#/"
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "run_at": "document_end",
      "all_frames": true,
      "js": [
        "tab.js"
      ]
    }
  ],
  "permissions": [
    "clipboardWrite",
    "storage",
    "tabs",
    "unlimitedStorage"
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "*.png",
        "*.jpg"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ]
    },
    {
      "resources": [
        "popup.html"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ]
    }
  ]
}