> For the complete documentation index, see [llms.txt](https://help.clickatell.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.clickatell.com/web-chat/supported-message-types.md).

# Supported message types

| **Message type**     | **Direction**                               | **What is supported**                                                                                               |
| -------------------- | ------------------------------------------- | ------------------------------------------------------------------------------------------------------------------- |
| Text                 | Both directions                             | Up to 4,096 characters, in any language, including emoji.                                                           |
| Formatted text       | From your business                          | Bold, italic, underline, strikethrough, numbered lists, and bulleted lists, written with WhatsApp-style formatting. |
| Links                | From your business                          | Rendered as clickable. Links open in a new tab.                                                                     |
| Images and documents | Both directions                             | Shown in the chat window. PDF documents show an inline preview. Download links expire one hour after they are sent. |
| List                 | From your business, answered by the visitor | 2 to 10 items, with one selection only. Sections, a title, and a footer are optional.                               |
| Buttons              | From your business, answered by the visitor | 1 to 5 buttons, with an optional text or media header.                                                              |

{% hint style="info" %}
Web Chat uses WhatsApp-style formatting, so wording that has been generated for WhatsApp renders consistently on Web Chat. Note that this is not the same as standard markdown.
{% endhint %}