Translations:Multimedia/Media Viewer/52/en

To test either version of Media Viewer, click on the small 'Beta' link next to 'Preferences' in your personal menu. Then check the box next to 'Media Viewer' in the beta>Special:Preferences#mw-prefsection-betafeatures|Beta Features section of your user preferences — and click 'Save' (see screenshot). You can turn off any this option anytime, by reversing these steps.