Save as MHTML

Edit and save active tab or selected area in MHTL/MHT (MIME HTML) archive format to have a clean single-file backup

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manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 3,
  "version": "0.4.0",
  "name": "Save as MHTML",
  "description": "__MSG_description__",
  "default_locale": "en",
  "background": {
    "service_worker": "worker.js"
  },
  "permissions": [
    "storage",
    "pageCapture",
    "activeTab",
    "downloads",
    "contextMenus",
    "notifications",
    "scripting"
  ],
  "homepage_url": "https://webextension.org/listing/save-as-mhtml.html",
  "icons": {
    "16": "data/icons/16.png",
    "32": "data/icons/32.png",
    "48": "data/icons/48.png",
    "64": "data/icons/64.png",
    "128": "data/icons/128.png",
    "256": "data/icons/256.png",
    "512": "data/icons/512.png"
  },
  "action": {},
  "options_ui": {
    "page": "data/options/index.html",
    "open_in_tab": true
  },
  "web_accessible_resources": [
    {
      "resources": [
        "data/toolbar/index.html"
      ],
      "matches": [
        "*://*/*"
      ]
    }
  ],
  "commands": {
    "_execute_action": {},
    "edit-page": {
      "description": "Toggle Edit Mode"
    },
    "reader-view": {
      "description": "Open in Reader View (declutter)"
    },
    "simplify": {
      "description": "Keep Selection Only"
    }
  }
}