> For the complete documentation index, see [llms.txt](https://docs.vpay.africa/vpay-js-inline-dropin-integration-guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.vpay.africa/vpay-js-inline-dropin-integration-guide/3.-web-app-setup.md). # 3. Web App Setup With a few lines of code, you can integrate the VPay Javascript Dropin library and start accepting payments on your web and mobile web sites. The library is available at: *Sandbox Base URL:* [*https://dropin-sandbox.vpay.africa*](https://dropin-sandbox.vpay.africa) *Live Base URL:* [*https://dropin.vpay.africa*](https://dropin.vpay.africa) ### HTML Code Snippet (For Sandbox) ```html Order Checkout Page ``` {% hint style="warning" %} Each transactionref that you generate should be unique, alphanumeric and different from previously used ones. You may generate a ref using any scheme of your preference. {% endhint %} {% hint style="warning" %} When setting up for your live web app, remember to edit the **head** \