diff --git a/thumbnail/thumbnail.cpp b/thumbnail/thumbnail.cpp
--- a/thumbnail/thumbnail.cpp
+++ b/thumbnail/thumbnail.cpp
@@ -682,7 +682,8 @@
 {
     const QMimeDatabase db;
     const QUrl fileUrl = QUrl::fromLocalFile(filePath);
-    const QString subPlugin = pluginForMimeType(db.mimeTypeForUrl(fileUrl).name());
+    const QString mimeType = db.mimeTypeForUrl(fileUrl).name();
+    const QString subPlugin = pluginForMimeType(mimeType);
     if (subPlugin.isEmpty() || !m_enabledPlugins.contains(subPlugin)) {
         return false;
     }
@@ -726,6 +727,16 @@
             if (subCreator->create(filePath, cacheSize, cacheSize, thumbnail)) {
                 scaleDownImage(thumbnail, cacheSize, cacheSize);
 
+                KFileItem item(fileUrl);
+
+                // NOTE keep in sync with kio's PreviewJobPrivate::createThumbnail()
+                thumbnail.setText(QStringLiteral("Thumb::URI"), fileUrl.toEncoded());
+                // KIO normally uses -1 as fallback for mtime but PreviewJob uses 0...
+                thumbnail.setText(QStringLiteral("Thumb::MTime"), QString::number(item.entry().numberValue(KIO::UDSEntry::UDS_MODIFICATION_TIME, 0)));
+                thumbnail.setText(QStringLiteral("Thumb::Size"), number(item.size()));
+                thumbnail.setText(QStringLiteral("Thumb::Mimetype"), mimeType);
+                // TODO "Software" = "KDE Thumbnail Generator (v ...)"
+
                 // The thumbnail has been created successfully. Store the thumbnail
                 // to the cache for future access.
                 if (thumbnailfile.open(QIODevice::WriteOnly | QIODevice::Truncate)) {