in src/main/java/org/apache/sling/thumbnails/internal/ThumbnailsWebConsole.java [78:101]
protected void renderContent(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse)
throws IOException {
PrintWriter pw = httpServletResponse.getWriter();
printSeparator(pw, "Supported Resource Types", true);
pw.println("[Resource Type] => [MetaType Property Path]");
thumbnailSupport.getSupportedTypes()
.forEach(st -> pw.println(st + " => " + thumbnailSupport.getMetaTypePropertyPath(st)));
printSeparator(pw, "Persistable Resource Types", false);
pw.println("[Resource Type] => [Rendition Path]");
thumbnailSupport.getPersistableTypes()
.forEach(pt -> pw.println(pt + " => " + thumbnailSupport.getRenditionPath(pt)));
printSeparator(pw, "Registered Thumbnail Providers", false);
List<ThumbnailProvider> providers = ((TransformerImpl) transformer).getThumbnailProviders();
Lists.reverse(providers).forEach(p -> pw.println(p.getClass().getName()));
printSeparator(pw, "Registered Transformation Providers", false);
List<TransformationHandler> handlers = ((TransformerImpl) transformer).getHandlers();
handlers.forEach(h -> pw.println(h.getResourceType() + "=" + h.getClass().getCanonicalName()));
pw.println("</pre>");
pw.println("</div>");
}