diff --git a/src/kitemviews/kfileitemmodelrolesupdater.cpp b/src/kitemviews/kfileitemmodelrolesupdater.cpp
--- a/src/kitemviews/kfileitemmodelrolesupdater.cpp
+++ b/src/kitemviews/kfileitemmodelrolesupdater.cpp
@@ -499,10 +499,21 @@
     const int slashIndex = mimeType.indexOf(QLatin1Char('/'));
     const bool isFontPreview = mimeType.rightRef(slashIndex).contains(QLatin1String("font"));
     const bool isFolderPreview = item.isDir();
+    const bool isIconCandidate = (mimeType == QLatin1String("image/png") ||
+                                  mimeType == QLatin1String("image/svg+xml") ||
+                                  mimeType == QLatin1String("image/svg+xml-compressed")) &&
+                                  scaledPixmap.width() == scaledPixmap.height() &&
+                                  (scaledPixmap.width() & 0x7) == 0;
+    const bool isAppImagePreview = mimeType == QLatin1String("application/x-appimage") ||
+                                   mimeType == QLatin1String("application/vnd.appimage");
     const bool isWindowsExePreview = mimeType == QLatin1String("application/x-ms-dos-executable") ||
                                      mimeType == QLatin1String("application/x-msdownload");
 
-    if (!isFolderPreview && !isFontPreview && !isWindowsExePreview) {
+    if (!isFontPreview &&
+        !isFolderPreview &&
+        !isIconCandidate &&
+        !isAppImagePreview &&
+        !isWindowsExePreview) {
         if (m_enlargeSmallPreviews) {
             KPixmapModifier::applyFrame(scaledPixmap, m_iconSize);
         } else {