> 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/developers-documentation/channels/whatsapp-and-sms-one-api/supported-content-types-and-limitations.md).

# Supported Content Types & Limitations

The table below shows the supported content types for the *contentType* parameter (mentioned in the Send one or more messages and Upload media file for One API sections of the [API Reference page](/developers-api-reference/reference/one-api.md)) and their size limits.

Note that the size limit with the **lowest** value between the WhatsApp size limit and the Clickatell API limit will apply. For example. the size limit for an image is 5MB (see table below) - WhatsApp will not accept an image above 5MB even though the Clickatell API can accept a larger media/template media message request.

{% hint style="warning" %}
WhatsApp (on inbound messages) can implement new supported content types or codes anytime – you'll need to handle this dynamically.
{% endhint %}

<table><thead><tr><th width="107.5999755859375">Media</th><th width="142.5999755859375">Media Message</th><th width="121.5999755859375">Media Template</th><th width="116">WhatsApp Size Limit</th><th width="132.4000244140625">Clickatell Size Limit (Inline Media)</th><th width="117.400146484375">Clickatell Size Limit (Media Upload)</th></tr></thead><tbody><tr><td>Audio</td><td><p>audio/acc</p><p>audio/mp4</p><p>audio/amr</p><p>audio/mpeg</p><p>audio/ogg*</p><p>codecs=opus</p></td><td>Not supported</td><td>16 MB</td><td>20 MB</td><td>30 MB</td></tr><tr><td>Document</td><td><p>application/pdf</p><p>application/msword</p><p>application/vnd.ms-powerpoint</p><p>application/vnd.ms-excel</p><p>text/plain</p></td><td>application/pdf</td><td>100 MB</td><td>20 MB</td><td>30 MB</td></tr><tr><td>Image</td><td><p>image/jpeg</p><p>image/png</p></td><td><p>image/jpeg</p><p>image/png</p></td><td>5 MB</td><td>20 MB</td><td>30 MB</td></tr><tr><td>Video**</td><td><p>video/mp4</p><p>video/3gpp</p></td><td><p>video/mp4</p><p>video/3gpp</p></td><td>5 MB</td><td>20 MB</td><td>30 MB</td></tr></tbody></table>

\**The base audio/ogg type is not supported on Chat Flow.*

\*\**Only H.264 video codec and AAC audio codec are supported. Only videos with a single audio stream are supported.*


---

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