# Send Library Agent 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 promotion or other information product use asset in 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](https://docs.3dolphins.ai/5.1.x/bot-settings/digital-library) 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. ![Send Library](https://2268349083-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MNQidQwa-0K9_KnQpoc%2F-MQPpXaMfsEoyWANsnFu%2F-MQRFuuE59PZBlyWcs1n%2FScreen%20Shot%202021-01-07%20at%2016.53.00.png?alt=media\&token=8afadd21-7de8-4620-b2bb-f4367291f1c8) 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 | | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | | | |