diff --git a/app/mainwindow.cpp b/app/mainwindow.cpp
--- a/app/mainwindow.cpp
+++ b/app/mainwindow.cpp
@@ -927,12 +927,6 @@
 
 MainWindow::~MainWindow()
 {
-    if (GwenviewConfig::lowResourceUsageMode()) {
-        QDir dir(ThumbnailProvider::thumbnailBaseDir());
-        if (dir.exists()) {
-            dir.removeRecursively();
-        }
-    }
     delete d->mThumbnailProvider;
     delete d;
 }
diff --git a/lib/thumbnailprovider/thumbnailwriter.cpp b/lib/thumbnailprovider/thumbnailwriter.cpp
--- a/lib/thumbnailprovider/thumbnailwriter.cpp
+++ b/lib/thumbnailprovider/thumbnailwriter.cpp
@@ -22,10 +22,11 @@
 #include "thumbnailwriter.h"
 
 // Local
+#include "gwenview_lib_debug.h"
+#include "gwenviewconfig.h"
 
 // Qt
 #include <QImage>
-#include "gwenview_lib_debug.h"
 #include <QTemporaryFile>
 
 namespace Gwenview
@@ -42,6 +43,10 @@
 
 static void storeThumbnailToDiskCache(const QString& path, const QImage& image)
 {
+    if (GwenviewConfig::lowResourceUsageMode()) {
+        return;
+    }
+
     LOG(path);
     QTemporaryFile tmp(path + QStringLiteral(".gwenview.tmpXXXXXX.png"));
     if (!tmp.open()) {
@@ -59,6 +64,10 @@
 
 void ThumbnailWriter::queueThumbnail(const QString& path, const QImage& image)
 {
+    if (GwenviewConfig::lowResourceUsageMode()) {
+        return;
+    }
+
     LOG(path);
     QMutexLocker locker(&mMutex);
     mCache.insert(path, image);