PlugThis is an AI builder made only for Chrome extensions. You describe the extension you want in a chat. In about two minutes it generates a complete Manifest V3 package with a popup, content scripts, a background service worker and a manifest. You can refine it through chat, edit the code in a built-in editor, then download the ZIP or publish it to the Chrome Web Store. It suits non-developers, founders, freelancers and developers who want to skip the boilerplate.

• Chat-based extension generation: Describe your extension in plain English and get a full Manifest V3 bundle in about two minutes. Ask follow-up questions in the chat to refine it, and upload images such as mockups.
• Built-in code editor: Open generated files in a file explorer with syntax highlighting and multi-file tabs. You can make direct edits without leaving the builder.
• Live popup preview: Preview your extension's popup interface as you build it and follow generation updates to see how your project takes shape.
• Full-stack Supabase backends: Connect your Supabase account to add user login, Postgres storage and edge functions. This is included on the Builder plan.
• AI features with your own keys: Add summarizing, writing, translating or auto-reply features to your extension. It connects to AI providers such as OpenAI and Google Gemini using your own API key.
• Version history in My Extensions: Reopen, clone, download, publish or roll back saved builds. You can try changes and still return to an earlier version.
• Full code ownership: Download the complete extension folder and edit it in any editor. You can publish or sell it without PlugThis, and white-label work for clients is allowed.
• Free helper tools and templates: Use a catalog of ready-to-build prompts, an Idea Generator, a Manifest V3 Generator and a Permissions Explainer to get started faster.

• Built for Chrome extensions: PlugThis handles Manifest V3, service workers and permissions for you. General AI app builders default to web apps and need much more prompting to get the same result.
• Fast first build: You get a working extension package in about two minutes, so you can test an idea the same day.
• Full source code ownership: Download, edit, publish, or sell your extensions without depending on PlugThis to keep them running.
• Unlimited refinement chats: Both plans include unlimited build and edit chats under a fair-use policy, with no per-chat counter. You also get an email before you reach any monthly cap.
• Low entry price: The Starter plan costs $9.99/month and lets you publish to the Chrome Web Store. Your first payment comes with a 14-day money-back guarantee.
• Backend and AI options: The Builder plan adds Supabase auth, a database and LLM features. You can ship extensions with accounts and stored data, not just simple front-end tools.

Limited browser support: PlugThis is built for Chrome and Edge. Firefox support is still in development, and Safari is not currently supported.

• Low extension count per plan: Starter includes 1 extension and Builder includes 3. Agencies or makers with many projects may hit this limit quickly.
• Backend features locked to Builder: Starter is front-end only. You need the $29.99/month plan for Supabase login, a database or LLM integration.
• Limited in-browser preview: The live preview only shows the popup UI. To test content scripts on real sites, network blocking rules or context menus, you have to install the build in Chrome.

• Personal productivity tools: Create custom browser tools for everyday tasks, such as saving highlighted text, organizing research notes, managing tabs, or filling out forms. Non-technical users can describe what they need, generate an extension, and test it in Chrome.
• Validating a product idea:Turn a browser tool concept into an installable extension without hiring a developer upfront. Founders can use the $9.99/month Starter plan to build an initial version, gather user feedback, and assess demand before investing in further development. Chrome Web Store publication is subject to Google's review process.
• Client work for agencies: Build custom extensions for clients, from research tools to workflow automation. PlugThis allows commercial and white-label use, and you can hand over the source code so clients can maintain and develop their extensions independently.
• AI-powered browser assistants: Create extensions that summarize articles, translate text, draft emails, or suggest replies directly within browser workflows. Connect a supported AI provider using your own API key, with separate usage charges potentially applying.
• Extensions with user accounts: Build companion extensions for SaaS products or online services using Supabase for authentication and database storage. With the right backend setup, users can access saved information across devices.