> For the complete documentation index, see [llms.txt](https://interfacing.gitbook.io/interfacing-help-files/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://interfacing.gitbook.io/interfacing-help-files/document-control/document-and-record-management/creating-and-editing-documents/document-preview-requirements-and-limitations.md).

# Document Preview Requirements & Limitations

Learn about system and browser requirements for document previewing, including supported file types, size limits, and necessary browser extensions.

### Preview Limitations & Settings

#### <i class="fa-gauge">:gauge:</i>  Preview Loading Time&#x20;

Preview performance depends on file size and complexity. Documents with high-resolution images or intricate formatting may load slowly. For best results, download large or complex files directly.

{% content-ref url="/pages/gfKse7QDkQvvupQGOXfa" %}
[Downloading Documentation](/interfacing-help-files/end-users/library/downloading-objects.md)
{% endcontent-ref %}

#### <i class="fa-file">:file:</i>  File Size Limit

The default maximum file size for generating a preview is **10 MB**. Keeping this default helps maintain system performance.

* System administrators can modify this limit by adjusting the `FILE_PREVIEW_MAX_FILE_SIZE` setting under the **Advanced** tab in EPC.

#### <i class="fa-clock">:clock:</i>  Preview Generation Delay

Document previews are not generated immediately upon upload. By default, there is a **60-second** (**60,000 ms**) delay before the preview becomes available.

* System administrators can modify this delay by adjusting the `FILE_PREVIEW_TIMER_DEFAULT` setting .

***

### Supported Document Types & Browser Requirements

To preview a document successfully, the following conditions must be met:

* The document must be a **supported type**.

{% hint style="info" %}
**Supported Document Types:**

* **IMS:** Document Uploads, Templates
* **EPC:** URLs, File Links

**Not Supported:** Wikis, Generated Templates
{% endhint %}

* A **compatible browser** must be used.
* Any **required browser extensions** must be installed.

{% hint style="danger" %}
If these requirements are not met, the document will be downloaded automatically instead of previewed.
{% endhint %}

#### <i class="fa-file-magnifying-glass">:file-magnifying-glass:</i>  Document Preview Availability by Browser & File Type

<table><thead><tr><th width="140">File Type</th><th align="center">Chrome</th><th align="center">Firefox</th><th width="140" align="center">Internet Explorer</th><th align="center">Opera</th><th align="center">Safari</th></tr></thead><tbody><tr><td><strong>PDF Files</strong></td><td align="center">☑️</td><td align="center">☑️</td><td align="center">☑️</td><td align="center">☑️</td><td align="center">☑️</td></tr><tr><td><p><strong>Image Files</strong></p><ul><li>PNH
</li><li>JPEG, JPG
</li><li>GIF
</li><li>SVG, SVGZ
</li><li>TIF, TIFF
</li><li>WBMP
</li><li>WebP
</li><li>ICO
</li><li>JNG
</li><li>BMP</li></ul></td><td align="center">✅</td><td align="center">✅</td><td align="center">✅</td><td align="center">✅</td><td align="center">✅</td></tr><tr><td><strong>URLs</strong></td><td align="center">✅</td><td align="center">✅</td><td align="center">✅</td><td align="center">✅</td><td align="center">✅</td></tr><tr><td><strong>File Links</strong></td><td align="center">☑️</td><td align="center">☑️</td><td align="center">☑️</td><td align="center">❌</td><td align="center">❌</td></tr><tr><td><strong>MP4</strong></td><td align="center">✅</td><td align="center">✅</td><td align="center">✅</td><td align="center">✅</td><td align="center">✅</td></tr><tr><td><strong>WAV Files</strong></td><td align="center">✅</td><td align="center">✅</td><td align="center">❌</td><td align="center">✅</td><td align="center">✅</td></tr><tr><td><strong>Ogg Files</strong></td><td align="center">✅</td><td align="center">✅</td><td align="center">❌</td><td align="center">✅</td><td align="center">❌</td></tr></tbody></table>

{% hint style="info" %}
✅  Supported

☑️  Supported with required extension

❌  Not Supported
{% endhint %}

#### <i class="fa-puzzle-piece">:puzzle-piece:</i>  Required Extensions & Setup

<details>

<summary><strong>PDF Previews</strong></summary>

* **Chrome**: Requires [Adobe Acrobat Extension](https://chrome.google.com/webstore/detail/adobe-acrobat/efaidnbmnnnibpcajpcglclefindmkaj?hl=en)
* **Other Browsers** (**Firefox, Internet Explorer, Opera, Safari**): Requires [Adobe Reader](https://get.adobe.com/reader/)

</details>

<details>

<summary><strong>File Link Previews</strong></summary>

Supported in **Chrome**, **Firefox**, and **Internet Explorer** only.

* **Chrome:** Requires the [LocalLinks plugin](https://chrome.google.com/webstore/detail/locallinks/jllpkdkcdjndhggodimiphkghogcpida?utm_source=chrome-app-launcher-info-dialog)
* **Firefox:** Requires the [Local Filesystem Links plugin](https://addons.mozilla.org/en-US/firefox/addon/local-filesystem-links/)
* **Internet Explorer:** Requires **Trusted Sites** configuration

***

**How to Enable File Link Preview in Internet Explorer**

1. Open **Internet Explorer**.
2. Click the **Settings** icon (<i class="fa-gear">:gear:</i>).
3. From the menu, select **Internet options**.
4. Go to the **Security** tab.
5. Select the **Trusted Sites** (<i class="fa-check">:check:</i>) icon, then click **Sites**.
6. Add the required URLs to the list of trusted sites.

</details>


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