> For the complete documentation index, see [llms.txt](https://guides.clickatell.com/chat-desk/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://guides.clickatell.com/chat-desk/agent-desk/chat-capabilities/send-attachments-media-files.md).
# Send attachments (media files)
{% hint style="warning" %}
Not supported on the SMS channel.
{% endhint %}
As an agent, you can send and receive media files (e.g., statements, invoices, screenshots, and other important documents) while chatting with customers.
The following file types are supported:
| File Type | Supported Formats/File Extensions | Can be previewed in browser vs needs to be downloaded |
| ----------------------- | ------------------------------------------------- | ----------------------------------------------------- |
| Documents | .pdf, .doc or .docx, .ppt or .pptx, .xls or .xlsx | Needs to be downloaded |
| Images | JPEG, JPG, PNG | Can be viewed in browser and can be downloaded |
| Audio | AAC, AMR, MP3, OPUS, | Can be heard in browser and can be downloaded |
| Video | MP4 | Can be viewed in browser and can be downloaded |
| USDZ (AMB channel only) | USDZ | Needs to be downloaded |
## **Attach a file**
1. Select the *paper clip* icon below the text box area.
2. A pop-up appears on which you can drag and drop the files you want to attach. You can also browse your computer to select the files to attach.
{% hint style="info" %}
The file size limit is **64Mb.** Only one attachment can be sent at a time.
{% endhint %}
3. Once the file is uploaded, click *Send file*.
4. The customer can download the file on the channel they are using. When a customer sends you a file, you can download it from within the chat window:
