diff --git a/generaldialog.cpp b/generaldialog.cpp
index e96dc53..6e68c06 100644
--- a/generaldialog.cpp
+++ b/generaldialog.cpp
@@ -330,7 +330,7 @@ void generalDialog::on_okBtn_clicked()
                         dirIt.next();
                         if(QFileInfo(dirIt.filePath()).isFile()) {
                             QString suffix = QFileInfo(dirIt.filePath()).suffix();
-                            if(suffix == "txt" or suffix == "TXT" or suffix == "epub" or suffix == "pdf" or suffix == "PDF") {
+                            if(suffix == "txt" or suffix == "TXT" or suffix == "epub" or suffix == "EPUB" or suffix == "pdf" or suffix == "PDF" or suffix == "png" or suffix == "PNG" or suffix == "tif" or suffix == "TIF" or suffix == "bmp" or suffix == "BMP" or suffix == "tiff" or suffix == "TIFF" or suffix == "jpg" or suffix == "JPG" or suffix == "jpeg" or suffix == "JPEG") {
                                 if(dirIt.fileName().contains(global::keyboard::keyboardText) == true) {
                                     storageSearchResults.append(dirIt.fileName());
                                 }
diff --git a/reader.cpp b/reader.cpp
index f9c0466..d089900 100644
--- a/reader.cpp
+++ b/reader.cpp
@@ -2071,11 +2071,11 @@ bool reader::pdf_file_match(QString file) {
 }
 
 bool reader::image_file_match(QString file) {
-    if(file.right(3) == "png" or file.right(3) == "jpg" or file.right(3) == "bmp" or file.right(3) == "tif") {
+    if(file.right(3) == "png" or file.right(3) == "PNG" or file.right(3) == "jpg" or file.right(3) == "JPG" or file.right(3) == "bmp" or file.right(3) == "BMP" or file.right(3) == "tif" or file.right(3) == "TIF") {
         string_writeconfig("/inkbox/bookIsImage", "true");
         return true;
     }
-    else if(file.right(4) == "jpeg" or file.right(4) == "tiff") {
+    else if(file.right(4) == "jpeg" or file.right(4) == "JPEG" or file.right(4) == "tiff" or file.right(4) == "TIFF") {
         string_writeconfig("/inkbox/bookIsImage", "true");
         return true;
     }