> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://authorea.crisp.help/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# Hosting data and uploading files

Every document written on Authorea has a layer underneath for figures and data. Authorea supports a wide range of filetypes. Virtually any kind of file may be uploaded to a document. Here's how.

1. From the toolbar, click Insert -> File

![](https://storage.crisp.chat/users/helpdesk/website/956ad655c6bd5000/screen-shot-2019-04-22-at-12-1_jnf650.png)

2. Select a file (current filesize limits are: **25MB per file and 1GB per document**)

3. The file will show in your document, like this


![](https://storage.crisp.chat/users/helpdesk/website/956ad655c6bd5000/screen-shot-2019-05-06-at-2134_zjc2yt.png)


### Advanced data usage

Want to explore the data structure of a document? The Data view is available from the Article view by selecting the menu on the left side of the toolbar.

![](https://storage.crisp.chat/users/helpdesk/website/d38f777e-0276-4c52-8a15-b5855ac4903c/05c4bc8b-1cf1-4f68-991b-0be2787b3156.jpg)
Once in the Data view, new files may be uploaded via drag and drop, or via the `Upload new file` button.


![](https://storage.crisp.chat/users/helpdesk/website/d38f777e-0276-4c52-8a15-b5855ac4903c/20140b84-e878-495e-b315-960ad76db28e.jpg)