Chrome Extension Kit

PRIVATE TEMPLATE

Do not rebuild billing and user management for your paid Chrome extension.

Chrome Extension Kit is a private monorepo template for developers who want to sell paid Chrome extensions quickly. It brings Manifest V3, Polar.sh billing, Cloudflare Worker license management, and an Astro.js landing page into one repository so you can start building a paid Chrome extension immediately.

Buy for $29 See included code Read FAQ

WHAT YOU GET

A practical starter kit for monetized Chrome extensions.

Manifest v3 support

Popup, options page, license activation management, local entitlement cache, and user entitlement management.

Cloudflare Worker API

Create Polar.sh checkout sessions without exposing billing secrets in the landing page.

Astro.js landing page

Product pages, billing paths, documentation links, and deployment settings ready to customize.

Guided setup docs

Mock billing, signing keys, Chrome Web Store notes, Cloudflare deployment, and pricing copy adjustment guidance.

FLOW

Built to ship the first paid Chrome extension version quickly.

  1. Connect Polar.sh credentials and configure the GitHub repository access Benefit in Polar.sh.
  2. Set the Cloudflare Worker environment variables for checkout creation.
  3. Customize the extension copy, colors, and premium-member-only features for your product.
  4. Load the extension locally, test purchases, then publish.

PRICE

Private repository access for $29.

Purchase this template through Polar.sh. Checkout shows only your email address and payment details. After payment, an invitation link for GitHub repository access is sent through your Polar.sh receipt or Customer Portal.

$29

Access to the private Chrome Extension Kit template repository. After purchase, you may use the template any number of times, but the template and its derivatives must not be made public.

Chrome Extension Kit is being prepared and checkout is currently disabled.

Private repository access is sent to the email address entered at purchase. Follow the post-purchase instructions. See the FAQ for the GitHub access flow.

LICENSING NOTE

The template and its derivatives must stay private.

You can use the template to build and sell your own Chrome extension. The $29 plan does not include permission to republish, resell, or make the template repository or its derivatives public.