Currently, there is no possibility to preview your translation before it goes online on Netvibes. It means that you will have to wait for the next translation update before viewing your work online in context. Of course, when viewing the translation in context, you may quickly find that some of your translations may need some refining, which could not have been anticipated before previewing it. Therefore, feel free to edit again the strings until you feel confident that the translation is ok. Your re-edited strings should appear online after the next translation update.