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

# Prerequisites

Before you integrate the **JavaScript SDK**, make sure you have the following:

:white\_check\_mark: Use HTTPS for your website.

:white\_check\_mark: Host the payment page on your web server.

{% hint style="danger" %}
The **JavaScript SDK** does not function when you *host* the payment page using [File URI scheme](https://en.wikipedia.org/wiki/File_URI_scheme).
{% endhint %}

:white\_check\_mark: Plug the [VP8300 USB Card Reader](/guides/javascript/idtech-vp8300.md) into a USB port that supports USB 2.0 or later.

:white\_check\_mark: Use the *latest* versions of the these browsers:

* Chrome
* Firefox
* Edge
* Safari

{% hint style="warning" %}
Don't publish the *Public Key* outside of your code.
{% endhint %}


---

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