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

# Documents in Data > Explore

Data > Explore supports the curation and organization of your document files. You can import your documents using the UI, from cloud storage (with a JSON file), and using Encord's SDK.

Data > Explore supports the following document file types:

* PDF (.pdf)

<Note>Custom Metadata for document files is coming soon.</Note>

<Tip>When importing HTML pages, considering importing the HTML as a single file extension. Importing HTML as a single file extension allows you to import the HTML page with all its resources.</Tip>

## Quick Tour

Use the *PDF* tab to natively view all the PDF documents available in your Folders. From the *PDF* tab you can sort and filter all of your PDFs based on [PDF Quality Metrics](#document-quality-metrics). If only PDF files are in your Folders, no *PDF* tab is available. Your PDF files display in the Data > Explore. If there are a mix of file types (images, videos, audio files, and document files), menu options are available for the various file types (Video, Frames, Audio, PDF, Files).

![Quick Overview](https://storage.googleapis.com/docs-media.encord.com/static/img/Index/index-documents-quick-tour.gif)

* PDF Quality Metrics for sorting and filtering your.

* Expand the file view to scroll though documents.

## Use Data > Explore PDF Quality Metrics

Use PDF Quality Metrics to sort and filter your document files.

**Sort**
![Sort with example](https://storage.googleapis.com/docs-media.encord.com/static/img/Index/index-pdf-sort.gif)

**Filter**

![Filter with example](https://storage.googleapis.com/docs-media.encord.com/static/img/Index/index-pdf-filter.gif)

### Document Quality Metrics

Data > Explore supports filtering your document files using the following PDF quality metrics:

* Number of pages: Number of pages in the document file.