> ## Documentation Index
> Fetch the complete documentation index at: https://docs.box.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Box Doc Gen Limitations

<div className="article_labels_list" style={{display: 'none'}} dangerouslySetInnerHTML={{__html: "End User , Box Doc Gen , Overview , Article , Product Utilization , Established"}} />

Box Doc Gen has several limitations across APIs, security, performance, language support, and template features that you should consider when implementing document generation.

## API limitations

| <strong>Item</strong>  | <strong>Limit</strong> |
| ---------------------- | ---------------------- |
| Maximum template size  | 100 MB                 |
| Maximum JSON data size | 100 KB                 |
| Number of tags         | No fixed limit         |

## Box security limitations

Box Doc Gen must be able to access templates to generate documents. If a template is restricted by a Box Shield classification policy, document generation will fail.

Ensure your Shield classification policy allows Doc Gen access to required templates.

## Performance limitations

Performance varies based on template size and document complexity.

For templates smaller than 1 MB:

* Most documents (95%) generate in under 15 seconds when processing up to 50 documents per minute per enterprise.
* The system remains stable at up to 80 documents per minute, but generation time may exceed 15 seconds at higher volumes.

## Language limitations

Box Doc Gen supports English-only template tags. Other content can use any language.

| <strong>Component</strong>                 | <strong>Language support</strong>      |
| ------------------------------------------ | -------------------------------------- |
| Template tags                              | English only                           |
| JSON data and document content             | Any language                           |
| Computations, conditions, and calculations | English strings or numeric values only |

It is recommended to test templates to confirm language compatibility for your use case.

## Template limitations

Box Doc Gen uses Microsoft Word as the template authoring environment. Some Word features are not supported.

| <strong>Microsoft Word feature</strong>                                                                                  | <strong>Supported</strong> |
| ------------------------------------------------------------------------------------------------------------------------ | -------------------------- |
| Headers and footers                                                                                                      | Yes                        |
| Tags with comments                                                                                                       | No                         |
| Developer controls (text box, check box, combo box, options, frame, protected forms)                                     | No                         |
| Link tags                                                                                                                | No                         |
| Bookmarks                                                                                                                | No                         |
| Different headers/footers per page                                                                                       | No                         |
| Emojis                                                                                                                   | No                         |
| Custom fonts                                                                                                             | No                         |
| <a href="https://learn.microsoft.com/en-us/globalization/fonts-layout/text-layout">Text layout</a>                       | No                         |
| <a href="https://learn.microsoft.com/en-us/globalization/fonts-layout/text-directionality">Text directionality</a>       | No (Left-to-right only)    |
| <a href="https://learn.microsoft.com/en-us/globalization/fonts-layout/text-boundaries">Text boundaries</a>               | No                         |
| <a href="https://learn.microsoft.com/en-us/globalization/fonts-layout/pagination">Text alignment and pagination</a>      | No                         |
| <a href="https://learn.microsoft.com/en-us/globalization/fonts-layout/text-justification">Text justification</a>         | No                         |
| <a href="https://learn.microsoft.com/en-us/globalization/fonts-layout/line-and-word-breaking">Line and word breaking</a> | No                         |
| <a href="https://learn.microsoft.com/en-us/globalization/fonts-layout/ruby">Ruby characters and text annotation</a>      | No                         |
| Objects, shapes, 3D models, icons, graphs                                                                                | No                         |
| Media, video or audio                                                                                                    | No                         |