Wikipedia Language Switcher by C29H25N3O5

Wikipedia Language Switcher is a lightweight and customizable Firefox extension that lets you instantly switch between language versions of any Wikipedia article. Ideal for multilingual users, students, researchers, and global readers.

To use this extension, go to the extension’s settings page, enter your preferred languages using WP codes, separated by commas (e.g., en, es, fr, zh), and select your desired display mode: native names, WP codes, or custom labels. If using custom labels, enter your preferred label for each language in the provided fields.