> For the complete documentation index, see [llms.txt](https://docs.billingjs.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.billingjs.com/introduction.md).

# Introduction

## What is Billing.js?

Billing.js is a front end component library that allows you to create **professional** **pricing page** and **customer portal** linked to your Stripe by copy/pasting a few lines of code. 

All the components use TailwindCSS classes so you can customise them to fit your style and you can easily integrate TailwindUI pricing pages.

![](/files/sYbu4bHbDsYzvSXmV1Ym)