Filigrane sur toutes les images téléchargées

[Heliosurge (Dan DeMontmorency)]

This is pretty cool. You might also be interested in this theme-component

Discourse Web Page Watermark

This theme component adds a watermark to the page. It is possible to add any of the following information: a short text message the username currently logged in the timestamp the page was rendered Several settings allow customizing how and when the watermark will be rendered: show_watermark_in_background: If enabled will generate and display a watermark on the page. scroll_enabled: If enabled the watermark will be scrolled with the page. only_in_categories: List of categories in whi…