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

# Why don’t my documents display in preview?

> In some cases, document search works but the preview does not display. This is usually caused by your company’s Content Security Policy (CSP).

## Symptoms

* You can search and find documents in Paradigm.
* But when you click a document, the **preview does not load**.
* You may just see a blank space where the document should appear.

## Cause

This problem is most often caused by your company’s **Content Security Policy (CSP)**.

* Paradigm uses a technology called `blob:`**URIs**  to display document previews (PDFs, etc.).
* If your company’s CSP does not allow `blob:`, your browser will block the preview.
* That’s why search works (documents are found) but preview stays empty.

## How to check if CSP is the cause

1. Open Paradigm in your browser.
2. When the preview fails to load, open the **browser console**:
   * On Windows: press **F12** or **Ctrl + Shift + I**, then go to the *Console* tab.
   * On Mac: press **⌥ Option + ⌘ Command + I**, then go to the *Console* tab.
3. Look for errors mentioning **CSP** or \*\*blocked \*\*`blob:`**URI** .\
   Example:

   ```
   Refused to load resource: the content security policy directive blocked "blob:"

   ```

👉 If you see this type of message, the issue is indeed CSP-related.

## How to fix

If the problem is caused by CSP:

* Contact your company’s **IT or security team**.
* They need to update the **CSP configuration** to allow `blob:` as a valid source.

Once this is done, previews will work normally.

## If the problem is not CSP

* If you don’t see CSP errors in the console, the cause may be different.\
  👉 In that case, please [**contact our support team**](https://share-eu1.hsforms.com/1tfDJdWCoTQaC2PbMbonm8w2diqhu) so we can investigate.

⚠️ **Note**: Paradigm cannot bypass your company’s CSP configuration. The fix must be applied on your company’s side.