> For the complete documentation index, see [llms.txt](https://docs.3dolphins.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.3dolphins.ai/customer-service/dashboard/send-file-or-attachment/send-library.md).
# Send Library
Agents can send a library like cards, options, images, documents, videos, and audio. A common data type that is used for sending library is:
| Digital Library Management | Type File | Max. Size |
| -------------------------- | ---------------------------------------- | ------------- |
| Card | ‘gif’, ‘jpg’, and ‘png’. | 2Mb (Default) |
| Option | – | 2Mb (Default) |
| Image | ‘gif’, ‘jpg’, and ‘png’. | 2Mb (Default) |
| Document | ‘doc’, ‘docx’, ‘pdf’, ‘xls’, and ‘xlsx’. | 2Mb (Default) |
| Video | ‘mp4’ and ‘m4v’. | 2Mb (Default) |
| Audio | ‘mp3’ and ‘wav’. | 2Mb (Default) |
Sometimes, you might need to send promotions or other information product use assets in the digital library. Digital Library is a module containing knowledge that can make your Bot conversations more varied than standard text messages, and for more information about library please refer to [Digital Library](/bot-settings/digital-library.md) Page. In conversation chat, click the *attachment* button and select the **'Send Attachment'** button (
). Then, you will see a pop-up to find or add a digital library.
For example, attach digital library with type digital library is ‘card‘. If the digital library has been sent successfully, you will see a digital library in the conversation chat, as shown below.
| Agent page | Customer page |
| ------------------------------------------------------------------- | ------------------------------------------------------------------- |
| 
| 
|