> For the complete documentation index, see [llms.txt](https://docs.wfolio.pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.wfolio.pro/site/en/blocks/widgets/html-code.md).

# How to add HTML code (widget)

To insert external services to your site, for example, online chat, order a call back, social media plugins and others that support integration using html-code, use a special block — **HTML-code.**

Sign up to a third-party service and receive an HTML code to place it on your website.

Then on the Custom page where you want to place the block, click on the link **+** (Add a block), select the **Widgets** tab in the opened window and scroll the window to the very bottom. Choose the size of the **HTML Code** block that you want.

![](/files/CptCllsXhlDrYsojjM8z)

![](/files/A8VkfJrxvPCcj55GWVTc)

Now copy the HTML code of the external service and paste it into the block, save the changes.

![](/files/-MguAOWU5dGitkZW1aQk)