# Indexing FAQs

### What's an index?

An index is a database of all the searchable content on your website. 

### How do you index my content?

Our crawler visits each page that is accessible from the URL you provide and extracts body text and metadata.  The collected data is structured and stored in the search index. The index updates automatically at regular intervals to keep your content current.

### What content do you index?

We can index the content of the following file types:

* HTML Pages
* Images
* PDF Documents *(Enterprise Plans Only)* 

For each indexed URL, we attempt to extract key fields such as:

* Title 
* Description
* Author
* Publish Date 
* Body Text 

### What content is not indexed?

Some content on your site may not be included in your search index:

* Blocked Pages – If your site’s server permissions or redirects prevent access, those pages won’t be indexed.
* Protected Content – Pages behind logins, paywalls, or authentication barriers cannot be indexed.
* External Domains & Subdomains – We only index the domain you provide. For example, if you create an engine for `example.com`, pages on `blog.example.com` will **not** be included.

### How can I improve the quality of my index?

Refer to the [indexing-best-practices](https://docs.direqt-search.com/content-indexing/indexing-best-practices "mention") guide for tips on optimizing your site index.