# Interface language - DE Decompiler

> Select the interface language under Tools > Options in the Personalize section.

Canonical HTML: <https://www.de-decompiler.com/help/language_selection.htm>

## Interface language

Select the interface language under Tools > Options in the Personalize section.

![The interface-language selector.](https://www.de-decompiler.com/image/help/options_language.png)
The interface-language selector.

Choose an available localization and restart DE Decompiler so that the selected language is applied consistently across its windows. This manual uses the English interface captions.

### Local and online documentation

The English manual is available online and as a PDF. Keep a local copy when working in an isolated analysis environment. The local manual includes the product website and support email in [About the developer](https://www.de-decompiler.com/help/about_author.htm).

If the selected help translation is unavailable, DE Decompiler falls back to the English PDF or website. When a local PDF or CHM cannot be opened, the corresponding online documentation is used.