diff --git a/back/pom.xml b/back/pom.xml
index c3625f2..9701c39 100644
--- a/back/pom.xml
+++ b/back/pom.xml
@@ -22,6 +22,13 @@
 			<artifactId>archidata</artifactId>
 			<version>0.19.1-SNAPSHOT</version>
 		</dependency>
+		<!-- Loopback of logger JDK logging API to SLF4J -->
+		<dependency>
+			<groupId>org.slf4j</groupId>
+			<artifactId>jul-to-slf4j</artifactId>
+			<version>2.0.9</version>
+		</dependency>
+		<!-- generic logger of SLF4J to console (in color) -->
 		<dependency>
 			<groupId>ch.qos.logback</groupId>
 			<artifactId>logback-classic</artifactId>
diff --git a/back/src/org/kar/karusic/WebLauncher.java b/back/src/org/kar/karusic/WebLauncher.java
index 71ad576..058f527 100755
--- a/back/src/org/kar/karusic/WebLauncher.java
+++ b/back/src/org/kar/karusic/WebLauncher.java
@@ -2,6 +2,7 @@ package org.kar.karusic;
 
 import java.net.URI;
 import java.util.Iterator;
+import java.util.logging.LogManager;
 
 import javax.imageio.ImageIO;
 import javax.imageio.ImageReader;
@@ -41,6 +42,7 @@ import org.kar.karusic.migration.Migration20250104;
 import org.kar.karusic.migration.Migration20250105;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+import org.slf4j.bridge.SLF4JBridgeHandler;
 
 import jakarta.ws.rs.core.UriBuilder;
 
@@ -75,6 +77,10 @@ public class WebLauncher {
 	}
 
 	public static void main(final String[] args) throws Exception {
+		// Loop-back of logger JDK logging API to SLF4J
+		LogManager.getLogManager().reset();
+		SLF4JBridgeHandler.install();
+
 		WebLauncher.LOGGER.info("[START] application wake UP");
 		final WebLauncher launcher = new WebLauncher();
 		launcher.migrateDB();
diff --git a/back/src/org/kar/karusic/WebLauncherLocal.java b/back/src/org/kar/karusic/WebLauncherLocal.java
index 7582acb..538cc43 100755
--- a/back/src/org/kar/karusic/WebLauncherLocal.java
+++ b/back/src/org/kar/karusic/WebLauncherLocal.java
@@ -1,6 +1,7 @@
 package org.kar.karusic;
 
 import java.util.List;
+import java.util.logging.LogManager;
 
 import org.kar.archidata.api.DataResource;
 import org.kar.archidata.api.ProxyResource;
@@ -18,6 +19,7 @@ import org.kar.karusic.api.TrackResource;
 import org.kar.karusic.api.UserResource;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+import org.slf4j.bridge.SLF4JBridgeHandler;
 
 public class WebLauncherLocal extends WebLauncher {
 	private static final Logger LOGGER = LoggerFactory.getLogger(WebLauncherLocal.class);
@@ -35,6 +37,10 @@ public class WebLauncherLocal extends WebLauncher {
 	}
 
 	public static void main(final String[] args) throws Exception {
+		// Loop-back of logger JDK logging API to SLF4J
+		LogManager.getLogManager().reset();
+		SLF4JBridgeHandler.install();
+		// Generate the APIs in type-script
 		generateObjects();
 		final WebLauncherLocal launcher = new WebLauncherLocal();
 		launcher.process();
diff --git a/front/src/components/Icon.tsx b/front/src/components/Icon.tsx
index 300946d..4bb7df3 100644
--- a/front/src/components/Icon.tsx
+++ b/front/src/components/Icon.tsx
@@ -25,7 +25,7 @@ export const Icon = forwardRef<IconProps, 'span'>(
                 maxWidth={sizeIcon}
                 maxHeight={sizeIcon}
                 align="center"
-                padding="1%"
+                padding="1px"
                 ref={ref}
                 {...rest}>
                 <Box