diff --git a/src/main/java/pro/litvinovg/w2phtml/gui/ConfigurationWindow.java b/src/main/java/pro/litvinovg/w2phtml/gui/ConfigurationWindow.java
index 9eaa7f5..6991d80 100644
--- a/src/main/java/pro/litvinovg/w2phtml/gui/ConfigurationWindow.java
+++ b/src/main/java/pro/litvinovg/w2phtml/gui/ConfigurationWindow.java
@@ -235,42 +235,50 @@ public class ConfigurationWindow extends JFrame {
 
 		
 		JLabel lb_TargetFormat_description = new JLabel("Target format");
+		
+		JButton btnChooseFile = new JButton("Choose file");
+		btnChooseFile.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				FileDialog fileDialog = new FileDialog();
+				String newFilePath = fileDialog.chooseFile(tf_inputFile.getText());
+				if (newFilePath != null && !newFilePath.isEmpty()) {
+					tf_inputFile.setText(newFilePath);
+				}
+			}
+		});
 		GroupLayout gl_panel_configHTML = new GroupLayout(panel_configHTML);
 		gl_panel_configHTML.setHorizontalGroup(
 			gl_panel_configHTML.createParallelGroup(Alignment.LEADING)
 				.addGroup(gl_panel_configHTML.createSequentialGroup()
 					.addGap(32)
 					.addGroup(gl_panel_configHTML.createParallelGroup(Alignment.LEADING)
+						.addComponent(cb_UseMathJax, GroupLayout.PREFERRED_SIZE, 303, GroupLayout.PREFERRED_SIZE)
 						.addGroup(gl_panel_configHTML.createSequentialGroup()
-							.addComponent(cb_UseMathJax, GroupLayout.PREFERRED_SIZE, 303, GroupLayout.PREFERRED_SIZE)
-							.addContainerGap())
+							.addComponent(lb_TargetFormat_description, GroupLayout.PREFERRED_SIZE, 111, GroupLayout.PREFERRED_SIZE)
+							.addPreferredGap(ComponentPlacement.UNRELATED)
+							.addComponent(lb_TargetFormat, GroupLayout.PREFERRED_SIZE, 111, GroupLayout.PREFERRED_SIZE))
 						.addGroup(gl_panel_configHTML.createParallelGroup(Alignment.LEADING)
 							.addGroup(gl_panel_configHTML.createSequentialGroup()
-								.addComponent(lb_TargetFormat_description, GroupLayout.PREFERRED_SIZE, 111, GroupLayout.PREFERRED_SIZE)
-								.addPreferredGap(ComponentPlacement.UNRELATED)
-								.addComponent(lb_TargetFormat, GroupLayout.PREFERRED_SIZE, 111, GroupLayout.PREFERRED_SIZE)
-								.addContainerGap())
+								.addComponent(lb_FilePath, GroupLayout.PREFERRED_SIZE, 111, GroupLayout.PREFERRED_SIZE)
+								.addGap(18)
+								.addComponent(tf_inputFile, GroupLayout.PREFERRED_SIZE, 604, GroupLayout.PREFERRED_SIZE)
+								.addPreferredGap(ComponentPlacement.RELATED)
+								.addComponent(btnChooseFile, GroupLayout.PREFERRED_SIZE, 113, GroupLayout.PREFERRED_SIZE))
 							.addGroup(gl_panel_configHTML.createSequentialGroup()
-								.addGroup(gl_panel_configHTML.createParallelGroup(Alignment.LEADING)
-									.addGroup(gl_panel_configHTML.createSequentialGroup()
-										.addComponent(lb_FilePath, GroupLayout.PREFERRED_SIZE, 111, GroupLayout.PREFERRED_SIZE)
-										.addGap(18)
-										.addComponent(tf_inputFile, GroupLayout.DEFAULT_SIZE, 755, Short.MAX_VALUE))
-									.addGroup(gl_panel_configHTML.createSequentialGroup()
-										.addComponent(lb_Scale, GroupLayout.PREFERRED_SIZE, 111, GroupLayout.PREFERRED_SIZE)
-										.addGap(18)
-										.addComponent(tf_Scale, GroupLayout.PREFERRED_SIZE, 175, GroupLayout.PREFERRED_SIZE))
-									.addGroup(gl_panel_configHTML.createSequentialGroup()
-										.addComponent(lb_FilterLetterSpacing, GroupLayout.PREFERRED_SIZE, 253, GroupLayout.PREFERRED_SIZE)
-										.addGap(18)
-										.addComponent(tf_FilterLetterSpacing, GroupLayout.PREFERRED_SIZE, 58, GroupLayout.PREFERRED_SIZE))
-									.addComponent(cb_convertToPx, GroupLayout.PREFERRED_SIZE, 592, GroupLayout.PREFERRED_SIZE)
-									.addComponent(cb_IgnoreHardLineBreaks, GroupLayout.PREFERRED_SIZE, 303, GroupLayout.PREFERRED_SIZE)
-									.addComponent(cb_IgnoreEmptyParagraphs, GroupLayout.PREFERRED_SIZE, 303, GroupLayout.PREFERRED_SIZE)
-									.addComponent(cb_EmbedRaster, GroupLayout.PREFERRED_SIZE, 194, GroupLayout.PREFERRED_SIZE)
-									.addComponent(cb_EmbedVectorImages, GroupLayout.PREFERRED_SIZE, 214, GroupLayout.PREFERRED_SIZE)
-									.addComponent(cb_InlineStyles, GroupLayout.PREFERRED_SIZE, 156, GroupLayout.PREFERRED_SIZE))
-								.addGap(48)))))
+								.addComponent(lb_Scale, GroupLayout.PREFERRED_SIZE, 111, GroupLayout.PREFERRED_SIZE)
+								.addGap(18)
+								.addComponent(tf_Scale, GroupLayout.PREFERRED_SIZE, 175, GroupLayout.PREFERRED_SIZE))
+							.addGroup(gl_panel_configHTML.createSequentialGroup()
+								.addComponent(lb_FilterLetterSpacing, GroupLayout.PREFERRED_SIZE, 253, GroupLayout.PREFERRED_SIZE)
+								.addGap(18)
+								.addComponent(tf_FilterLetterSpacing, GroupLayout.PREFERRED_SIZE, 58, GroupLayout.PREFERRED_SIZE))
+							.addComponent(cb_convertToPx, GroupLayout.PREFERRED_SIZE, 592, GroupLayout.PREFERRED_SIZE)
+							.addComponent(cb_IgnoreHardLineBreaks, GroupLayout.PREFERRED_SIZE, 303, GroupLayout.PREFERRED_SIZE)
+							.addComponent(cb_IgnoreEmptyParagraphs, GroupLayout.PREFERRED_SIZE, 303, GroupLayout.PREFERRED_SIZE)
+							.addComponent(cb_EmbedRaster, GroupLayout.PREFERRED_SIZE, 194, GroupLayout.PREFERRED_SIZE)
+							.addComponent(cb_EmbedVectorImages, GroupLayout.PREFERRED_SIZE, 214, GroupLayout.PREFERRED_SIZE)
+							.addComponent(cb_InlineStyles, GroupLayout.PREFERRED_SIZE, 156, GroupLayout.PREFERRED_SIZE)))
+					.addContainerGap(80, Short.MAX_VALUE))
 		);
 		gl_panel_configHTML.setVerticalGroup(
 			gl_panel_configHTML.createParallelGroup(Alignment.LEADING)
@@ -279,12 +287,15 @@ public class ConfigurationWindow extends JFrame {
 					.addGroup(gl_panel_configHTML.createParallelGroup(Alignment.BASELINE)
 						.addComponent(lb_TargetFormat_description)
 						.addComponent(lb_TargetFormat))
-					.addGap(22)
 					.addGroup(gl_panel_configHTML.createParallelGroup(Alignment.LEADING)
 						.addGroup(gl_panel_configHTML.createSequentialGroup()
-							.addGap(2)
+							.addGap(24)
 							.addComponent(lb_FilePath))
-						.addComponent(tf_inputFile, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
+						.addGroup(gl_panel_configHTML.createSequentialGroup()
+							.addGap(22)
+							.addGroup(gl_panel_configHTML.createParallelGroup(Alignment.BASELINE)
+								.addComponent(tf_inputFile, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
+								.addComponent(btnChooseFile))))
 					.addPreferredGap(ComponentPlacement.RELATED)
 					.addGroup(gl_panel_configHTML.createParallelGroup(Alignment.LEADING)
 						.addGroup(gl_panel_configHTML.createSequentialGroup()
@@ -573,42 +584,50 @@ public class ConfigurationWindow extends JFrame {
 
 		
 		JLabel lb_TargetFormat_description = new JLabel("Target format");
+		
+		JButton btnChooseFile = new JButton("Choose file");
+		btnChooseFile.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				FileDialog fileDialog = new FileDialog();
+				String newFilePath = fileDialog.chooseFile(tf_inputFile.getText());
+				if (newFilePath != null && !newFilePath.isEmpty()) {
+					tf_inputFile.setText(newFilePath);
+				}
+			}
+		});
 		GroupLayout gl_panel_configHTML = new GroupLayout(panel_configHTML);
 		gl_panel_configHTML.setHorizontalGroup(
 			gl_panel_configHTML.createParallelGroup(Alignment.LEADING)
 				.addGroup(gl_panel_configHTML.createSequentialGroup()
 					.addGap(32)
 					.addGroup(gl_panel_configHTML.createParallelGroup(Alignment.LEADING)
+						.addComponent(cb_UseMathJax, GroupLayout.PREFERRED_SIZE, 303, GroupLayout.PREFERRED_SIZE)
 						.addGroup(gl_panel_configHTML.createSequentialGroup()
-							.addComponent(cb_UseMathJax, GroupLayout.PREFERRED_SIZE, 303, GroupLayout.PREFERRED_SIZE)
-							.addContainerGap())
+							.addComponent(lb_TargetFormat_description, GroupLayout.PREFERRED_SIZE, 111, GroupLayout.PREFERRED_SIZE)
+							.addPreferredGap(ComponentPlacement.UNRELATED)
+							.addComponent(lb_TargetFormat, GroupLayout.PREFERRED_SIZE, 111, GroupLayout.PREFERRED_SIZE))
 						.addGroup(gl_panel_configHTML.createParallelGroup(Alignment.LEADING)
 							.addGroup(gl_panel_configHTML.createSequentialGroup()
-								.addComponent(lb_TargetFormat_description, GroupLayout.PREFERRED_SIZE, 111, GroupLayout.PREFERRED_SIZE)
-								.addPreferredGap(ComponentPlacement.UNRELATED)
-								.addComponent(lb_TargetFormat, GroupLayout.PREFERRED_SIZE, 111, GroupLayout.PREFERRED_SIZE)
-								.addContainerGap())
+								.addComponent(lb_FilePath, GroupLayout.PREFERRED_SIZE, 111, GroupLayout.PREFERRED_SIZE)
+								.addGap(18)
+								.addComponent(tf_inputFile, GroupLayout.PREFERRED_SIZE, 614, GroupLayout.PREFERRED_SIZE)
+								.addGap(6)
+								.addComponent(btnChooseFile, GroupLayout.PREFERRED_SIZE, 113, GroupLayout.PREFERRED_SIZE))
 							.addGroup(gl_panel_configHTML.createSequentialGroup()
-								.addGroup(gl_panel_configHTML.createParallelGroup(Alignment.LEADING)
-									.addGroup(gl_panel_configHTML.createSequentialGroup()
-										.addComponent(lb_FilePath, GroupLayout.PREFERRED_SIZE, 111, GroupLayout.PREFERRED_SIZE)
-										.addGap(18)
-										.addComponent(tf_inputFile, GroupLayout.DEFAULT_SIZE, 755, Short.MAX_VALUE))
-									.addGroup(gl_panel_configHTML.createSequentialGroup()
-										.addComponent(lb_Scale, GroupLayout.PREFERRED_SIZE, 111, GroupLayout.PREFERRED_SIZE)
-										.addGap(18)
-										.addComponent(tf_Scale, GroupLayout.PREFERRED_SIZE, 98, GroupLayout.PREFERRED_SIZE))
-									.addGroup(gl_panel_configHTML.createSequentialGroup()
-										.addComponent(lb_FilterLetterSpacing, GroupLayout.PREFERRED_SIZE, 253, GroupLayout.PREFERRED_SIZE)
-										.addGap(18)
-										.addComponent(tf_FilterLetterSpacing, GroupLayout.PREFERRED_SIZE, 58, GroupLayout.PREFERRED_SIZE))
-									.addComponent(cb_convertToPx, GroupLayout.PREFERRED_SIZE, 592, GroupLayout.PREFERRED_SIZE)
-									.addComponent(cb_IgnoreHardLineBreaks, GroupLayout.PREFERRED_SIZE, 303, GroupLayout.PREFERRED_SIZE)
-									.addComponent(cb_IgnoreEmptyParagraphs, GroupLayout.PREFERRED_SIZE, 303, GroupLayout.PREFERRED_SIZE)
-									.addComponent(cb_EmbedRaster, GroupLayout.PREFERRED_SIZE, 194, GroupLayout.PREFERRED_SIZE)
-									.addComponent(cb_EmbedVectorImages, GroupLayout.PREFERRED_SIZE, 214, GroupLayout.PREFERRED_SIZE)
-									.addComponent(cb_InlineStyles, GroupLayout.PREFERRED_SIZE, 156, GroupLayout.PREFERRED_SIZE))
-								.addGap(48)))))
+								.addComponent(lb_Scale, GroupLayout.PREFERRED_SIZE, 111, GroupLayout.PREFERRED_SIZE)
+								.addGap(18)
+								.addComponent(tf_Scale, GroupLayout.PREFERRED_SIZE, 98, GroupLayout.PREFERRED_SIZE))
+							.addGroup(gl_panel_configHTML.createSequentialGroup()
+								.addComponent(lb_FilterLetterSpacing, GroupLayout.PREFERRED_SIZE, 253, GroupLayout.PREFERRED_SIZE)
+								.addGap(18)
+								.addComponent(tf_FilterLetterSpacing, GroupLayout.PREFERRED_SIZE, 58, GroupLayout.PREFERRED_SIZE))
+							.addComponent(cb_convertToPx, GroupLayout.PREFERRED_SIZE, 592, GroupLayout.PREFERRED_SIZE)
+							.addComponent(cb_IgnoreHardLineBreaks, GroupLayout.PREFERRED_SIZE, 303, GroupLayout.PREFERRED_SIZE)
+							.addComponent(cb_IgnoreEmptyParagraphs, GroupLayout.PREFERRED_SIZE, 303, GroupLayout.PREFERRED_SIZE)
+							.addComponent(cb_EmbedRaster, GroupLayout.PREFERRED_SIZE, 194, GroupLayout.PREFERRED_SIZE)
+							.addComponent(cb_EmbedVectorImages, GroupLayout.PREFERRED_SIZE, 214, GroupLayout.PREFERRED_SIZE)
+							.addComponent(cb_InlineStyles, GroupLayout.PREFERRED_SIZE, 156, GroupLayout.PREFERRED_SIZE)))
+					.addContainerGap(97, Short.MAX_VALUE))
 		);
 		gl_panel_configHTML.setVerticalGroup(
 			gl_panel_configHTML.createParallelGroup(Alignment.LEADING)
@@ -617,12 +636,16 @@ public class ConfigurationWindow extends JFrame {
 					.addGroup(gl_panel_configHTML.createParallelGroup(Alignment.BASELINE)
 						.addComponent(lb_TargetFormat_description)
 						.addComponent(lb_TargetFormat))
-					.addGap(22)
 					.addGroup(gl_panel_configHTML.createParallelGroup(Alignment.LEADING)
 						.addGroup(gl_panel_configHTML.createSequentialGroup()
-							.addGap(2)
+							.addGap(24)
 							.addComponent(lb_FilePath))
-						.addComponent(tf_inputFile, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
+						.addGroup(gl_panel_configHTML.createSequentialGroup()
+							.addGap(22)
+							.addGroup(gl_panel_configHTML.createParallelGroup(Alignment.BASELINE)
+								.addComponent(tf_inputFile, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
+								.addComponent(btnChooseFile))))
+					.addPreferredGap(ComponentPlacement.RELATED)
 					.addGroup(gl_panel_configHTML.createParallelGroup(Alignment.LEADING)
 						.addGroup(gl_panel_configHTML.createSequentialGroup()
 							.addGap(8)