Jenny Wilson 
The classic browser extension SaaS project looks like this: week one is webpack config. Week two is figuring out why your Firebase auth token is not available in the service worker. Week three is CORS errors from your Stripe checkout. Week four you are deep in a blog post explaining why content scripts and the popup cannot share state.
You have not written a single line of code that is unique to your actual product idea.
This is not a failure of effort — it is a failure of starting position. If you begin a browser extension project from a blank manifest.json, you are committing to solving every infrastructure problem that every extension SaaS developer has already solved before you.
Here is a different approach.
What “Ready in 15 Minutes” Actually Means
LightningAddon is a production-ready monorepo. When you clone it and run the setup script, you get:
- A Chrome and Firefox extension that loads in the browser immediately
- Auth flows working with Firebase or Supabase (your choice, configured with one env var)
- Stripe checkout and customer portal triggered from the popup via a runtime message to the service worker
- A content script mounted inside a Shadow DOM with Tailwind styles isolated from the host page
- Typed messaging between popup, content script, background, and dashboard — with TypeScript enforcing correctness at every call site
- A working
pnpm build:chromeandpnpm build:firefoxcommand that produces store-ready packages
All of this before you write a single line of code specific to your product.
Weekend Day 1: Saturday
Morning (2–3 hours):
Clone the repo, run pnpm install, set your environment variables. You need a Supabase project (free tier) or a Firebase project, and a Stripe account in test mode. This takes 30–60 minutes if you are setting up the backend providers from scratch.
Run pnpm build:chrome. Load the unpacked extension in Chrome. You now have a working extension with auth and billing.
Afternoon (4–5 hours): Define your product feature. What does your extension actually do? This is the only question that matters, and it is the question you should be spending your weekend on — not CORS.
Start building your core feature. The popup is a React app. The content script is a React component inside a Shadow DOM. The background is a typed message handler. Pick whichever context your feature lives in and start coding.
Weekend Day 2: Sunday
Morning (3–4 hours):
Continue building. Wire your feature to storage if it needs persistence — chrome.storage.sync for settings, chrome.storage.local for larger data. Add any backend calls through Supabase or Firebase.
Afternoon (2–3 hours):
Test on a clean Chrome profile. Fix the obvious bugs. Test Firefox with pnpm build:firefox. Write your Chrome Web Store listing copy.
Evening: Submit to the Chrome Web Store. Review takes 1–3 business days. You shipped.
What You Still Need to Do
A weekend sprint gets you to submission — not to a polished, production-ready product. After you submit, you still need:
- Real store listing screenshots
- A privacy policy URL
- A proper landing page explaining what the extension does and why someone should install it
- Your first marketing push to get initial users
But those are execution problems, not architecture problems. And execution problems are easier to solve once you have something real to show.
The Actual Bottleneck Is Not Time
Most developers do not fail to ship browser extensions because they lack time. They fail because they get stuck in infrastructure decisions that have already been solved. LightningAddon removes those decisions entirely — not by making them for you through hidden magic, but by shipping you clean, understandable source code that already handles them correctly.
Clone it. Read it. Understand it. Then delete the parts you do not need and build the parts that are uniquely yours.
