---
title: "Add a custom Telerik RadSpell dictionary (.tdf)"
slug: "add-a-custom-telerik-radspell-dictionary---tdf-"
abstract: "How to add a custom Telerik RadSpell dictionary to a language."
---
# Add a custom Telerik RadSpell dictionary (.tdf)

Sitecore uses the Telerik RadSpell engine. By default, only French (fr-FR), English (en-US), and German (de-DE) are included. To add a custom dictionary:

1. Download the required dictionary .zip file from [Telerik's forum](https://www.telerik.com/forums/147971-radspell-dictionaries).
2. Extract the .tdf file - for example, `da-DK.tdf`.
3. Copy the .tdf file to the `<root>\sitecore\shell\Controls\Rich Text Editor\Dictionaries` folder, where `<root>` is the web root of a Content Management role or a standalone development environment.
4. In the Content Editor, expand the */sitecore/system/Languages* item and select the language item that you want to add the dictionary to - for example, *da*.
5. In the **Dictionary** field, specify the dictionary file name from step 3 (for example, `da-DK.tdf`) and save the item.

    ![The dictionary file name in the Dictionary field](https://doc.sitecore.com/api/markdown-image/xp/en/developers/93/sitecore-experience-manager/images/custom-dictionary.png)