Introduction
Developer documentation for the InkFlip codebase.
What is InkFlip?
InkFlip is a free ambigram tattoo concept generator: visitors type one or two words and instantly get an engine-rendered rotation stencil, plus a free AI artistic tattoo preview. The codebase also ships production-grade SaaS scaffolding inherited from its starter origins: authentication, subscription billing, credit system, AI integrations, admin dashboard, and i18n support.
Key Features
- Authentication — Email/password + Google OAuth via Better Auth
- Credit-Based Billing — Per-use credit system with auditable ledger + subscription plans via Creem
- AI Integration — Chat, image generation, and video generation powered by Volcano Engine (Doubao)
- Admin Dashboard — User management, credit adjustment, subscription control
- Internationalization — Full English and Chinese support via next-intl
- Email System — Transactional emails via Resend (verification, password reset, purchase confirmation)
- Marketing Pages — Landing page, pricing, blog (MDX), legal pages
Tech Stack
| Layer | Technology |
|---|---|
| Framework | Next.js 16 (App Router) + React 19 |
| Styling | Tailwind CSS + Framer Motion |
| Database | PostgreSQL + Drizzle ORM |
| Auth | Better Auth |
| Payments | Creem |
| AI | Volcano Engine (Doubao API) |
| Resend | |
| i18n | next-intl |
Getting Started
Head to the Quickstart guide to get your project running in minutes.