Themes / Chrome extensions & indie apps
Extension Kit
A product site that gets your extension through store review and in front of users: landing, pricing, docs, changelog, privacy policy, permissions explainer and a post-install welcome page.
What’s inside
Store-ready
- Privacy policy with Chrome Web Store “Limited Use” clause
- Permissions table: what each permission does and never does
- Install buttons for Chrome, Edge and Firefox
Product pages
- Landing with browser-window product mock
- Pricing with FAQ, docs with sidebar & TOC, changelog
- Post-install onboarding checklist page
Built right
- English, 日本語, 繁體中文 with hreflang
- Light & dark, one-line recolor
- AGENTS.md + Cursor rules for AI-assisted edits
Every page
Pricing — one-time, free and team plans
Docs — Content Collections with TOC
Changelog — a ledger of releases
Welcome — opens after install, noindex
繁體中文 — full i18n, also 日本語
Dark mode — warm charcoal
Specs
Under the hood
- Framework
- Astro 7 · static output
- Styling
- Tailwind CSS 4 · CSS-variable tokens
- JavaScript
- 0 KB framework · 1 inline dark-mode snippet
- Content
- Markdown Content Collections
- Pages
- Landing · Pricing · Docs · Changelog · Privacy policy · Post-install welcome
- Languages
- en · ja · zh-TW
- Node
- 22 LTS
- Deploy
- Cloudflare Pages · Netlify · Vercel · any static host
- Lighthouse
- 100 / 100 / 100 / 100 — full report
- Free preview
- astro-extension-kit-lite (MIT) ↗
Pricing
One payment. Unlimited sites.
Extension Kit · launch price
$29regular price $39
Early-bird $29 for the first 14 days after launch · then $39.
One-time payment, unlimited projects.
Not available in your region
We couldn’t confirm your region — email support@formchime.com
Bundle · both themes · launch price
$49regular price $78
Early-bird $49 for the first 14 days after launch · then $59 · $78 if bought separately.
Extension Kit + Lab Site. One-time payment, unlimited projects.
Not available in your region
We couldn’t confirm your region — email support@formchime.com
USD · VAT / sales tax added at checkout where applicable · Not on sale yet — email support@formchime.com to hear when checkout opens · Terms & refunds · Privacy
Unlimited projects
Use it for as many of your own or client sites as you like.
Client work allowed
Build and hand over finished sites to clients.
12 months of updates
Updates for 12 months; the code is yours forever.
No resale
Don’t resell or publish the source as a template or starter.
Questions
How do I get the code?
After checkout, Polar invites your GitHub account to a private repository. You’ll get an invite from the smallbench-labs GitHub organization (that’s us). Clone it and run npm install. If you get a refund, access is removed automatically.
Do I need to know Astro?
Not much. Content lives in Markdown, one data file and one .bib file. Each repo ships an AGENTS.md and Cursor rules, so an AI editor can make changes safely.
Is there a free version?
Yes. Each theme has an MIT-licensed one-page Lite version, so you can check the code quality before you buy.
Can I buy from Japan?
Checkout isn’t available in Japan.
Refunds?
Refunds within 14 days of purchase, no questions asked — email support@formchime.com. Your repo access is removed when the refund is issued.
How long do I get updates?
Updates for 12 months; the code is yours forever.
Which Astro version?
Astro 7 and Tailwind CSS 4, Node 22. Zero framework JavaScript — the only script toggles dark mode.