--- a/js/feed-preview.js	Mon Jan 21 08:22:52 2019 +0100
+++ b/js/feed-preview.js	Mon Jan 21 15:15:59 2019 +0100
@@ -8,7 +8,8 @@
 
 'use strict';
 
-export function renderFeedPreview(feedPreviewDocument, feed) {
+export function renderFeedPreview(feedPreviewDocument, feed,
+        expandEntriesByDefault) {
     // inject XSL stylesheet which transforms XHTML to HTML allowing the use of
     // the HTML DOM
     let xslFilename = browser.runtime.getURL('web_resources/xhtml-to-html.xsl');
@@ -59,9 +60,10 @@
         let entryNode =
                 feedPreviewDocument.importNode(entryTemplateElement.content,
                 true);
+        entryNode.querySelector('details.entry').open = expandEntriesByDefault;
+
         let titleElement;
         let titleNode;
-
         if (typeof entry.link !== 'undefined') {
             titleNode = feedPreviewDocument
                     .importNode(entryTitleLinkedTemplateElement.content, true);