Interactive Extension Manifest Builder

Developer

Visually scaffold Chrome Extension MV3 manifest.json files.

ttb run chrome-manifest-generator

Extension Details (MV3)

Extension Name

Description

Version String

Required Permissions

storage activeTab tabs scripting

manifest.json

{
  "manifest_version": 3,
  "name": "My Awesome Extension",
  "version": "1.0.0",
  "description": "This extension modifies pages instantly.",
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": "icon48.png"
  },
  "background": {
    "service_worker": "background.js"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "permissions": [
    "storage",
    "activeTab"
  ]
}

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How to Use Extension Manifest Builder

Fill out the extension name, description, and version number. Then toggle which permissions your Chrome extension requires (e.g. storage, activeTab). The structured JSON preview updates immediately. Click "Download" to save the `manifest.json` to your project directory.

Frequently Asked Questions

What is Manifest V3?+

Manifest V3 (MV3) is the new architecture framework for Chrome extensions, heavily restricting background scripts in favor of Service Workers to improve security, privacy, and browser performance. Google Web Store has officially sunset MV2 extensions.

Do I need all permissions?+

No, in fact you should request as few permissions as absolute necessary. Broad permissions (like `<all_urls>`) drastically increase the manual review time required by the Google Chrome Web Store review team.

Interactive Extension Manifest Builder

Extension Details (MV3)

Reach developers using the Extension Manifest Builder tool

How to Use Extension Manifest Builder

Frequently Asked Questions

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