diff --git a/www/js/lib/images.js b/www/js/lib/images.js
index 4cdf79ce..d1b46285 100644
--- a/www/js/lib/images.js
+++ b/www/js/lib/images.js
@@ -222,7 +222,7 @@ define(['uiUtil'], function (uiUtil) {
                 });
             }
             // DEV: make sure list of file types here is the same as the list in Service Worker code
-            if (/(^|\/)[IJ]\/.*\.(jpe?g|png|svg|gif)($|[?#])/i.test(documentImages[i].src)) {
+            if (/(^|\/)[IJ]\/.*\.(jpe?g|png|svg|gif|webp)($|[?#])/i.test(documentImages[i].src)) {
                 documentImages[i].dataset.kiwixurl = documentImages[i].getAttribute('src');
                 if (params.imageDisplayMode === 'progressive') {
                     documentImages[i].style.opacity = '0';
diff --git a/www/js/lib/transformStyles.js b/www/js/lib/transformStyles.js
index 95823496..7c27c547 100644
--- a/www/js/lib/transformStyles.js
+++ b/www/js/lib/transformStyles.js
@@ -86,6 +86,7 @@ define(['util', 'uiUtil'], function (util, uiUtil) {
                 }
                 // Rename this required mobile style so that we don't trigger reading ZIM as mobile in print intercept
                 zl = /\/mobile_main_page\.css/.test(zl) ? "-/s/css_modules/newstyle_main_page.css" : zl;
+                zl = /\/content\.parsoid\.css/.test(zl) ? "-/s/css_modules/content.parsoid.css" : zl;
                 // Replace bootstrap with own: DEV: when upgrading to Bootstrap 4, stop doing this!
                 zl = zl.replace(/.+(bootstrap[^\/]*?\.css)/i, "css/$1");
                 console.log("Matched #" + i + " [" + zl + "] from local filesystem");