diff --git a/lib/install b/lib/install
index d48e27c..d4f031c 100644
--- a/lib/install
+++ b/lib/install
@@ -177,10 +177,13 @@ nginx_install() {
 	[[ ! -d /etc/nginx/sites-enabled ]] && sudo mkdir /etc/nginx/sites-enabled
 	[[ ! -d /etc/nginx/apps.d ]] && sudo mkdir /etc/nginx/apps.d
 
-	sudo sed -i 's/listen.*80;/listen 80 default_server;/' /etc/nginx/conf.d/default.conf
-	sudo sed -i 's/listen.*\[::\]:80;/listen [::]:80 default_server;/' /etc/nginx/conf.d/default.conf
-	sudo mv /etc/nginx/conf.d/default.conf /etc/nginx/sites-available/default
-	sudo ln -s /etc/nginx/sites-available/default /etc/nginx/sites-enabled/default
+	# In reinstalation (after purge with keep-data) this file don't exist
+	if [[ -f /etc/nginx/conf.d/default.conf ]]; then
+		sudo sed -i 's/listen.*80;/listen 80 default_server;/' /etc/nginx/conf.d/default.conf
+		sudo sed -i 's/listen.*\[::\]:80;/listen [::]:80 default_server;/' /etc/nginx/conf.d/default.conf
+		sudo mv /etc/nginx/conf.d/default.conf /etc/nginx/sites-available/default
+		sudo ln -s /etc/nginx/sites-available/default /etc/nginx/sites-enabled/default
+	fi
 	
 	sudo nginx -t && sudo systemctl start nginx
 	sudo systemctl enable nginx
@@ -321,6 +324,9 @@ nginx_optim() {
 	sudo sed -i '/ SERVER_NAME /s/#//' /etc/nginx/fastcgi_params
 	sudo sed -i '/ SERVER_NAME /s/^/#/' /etc/nginx/fastcgi_params
 	
+	# Needed to prevent duplicates in server-reset, also in reinstallation (after purge with keep-data)
+	sudo sed -i '/WebinolyCustom/,/WebinolyCustomEnd/{/.*/d}' /etc/nginx/fastcgi_params
+	
 	echo '# WebinolyCustom
 fastcgi_param  SCRIPT_FILENAME    $request_filename;
 fastcgi_param  SERVER_NAME        $host;
@@ -497,20 +503,26 @@ nginx_tool_site() {
 	# Tools site creation
 	[[ -z $(conf_read tools-port) ]] && conf_write tools-port $tools_port_default
 	
-	sudo site $(conf_read tools-port) -empty > /dev/null 2>&1
-	sudo cp /opt/webinoly/templates/general/admin_tools.conf /etc/nginx/sites-available/$(conf_read tools-port)
-	sudo sed -i "s/<port>/$(conf_read tools-port)/g"  /etc/nginx/sites-available/$(conf_read tools-port)
-	sudo nginx -t && sudo systemctl reload nginx
+	# Don't overwrite in case that exist (after purge with keep-data, for instance)
+	if [[ ! -f /etc/nginx/sites-available/$(conf_read tools-port) ]]; then
+		sudo site $(conf_read tools-port) -empty > /dev/null 2>&1
+		sudo cp /opt/webinoly/templates/general/admin_tools.conf /etc/nginx/sites-available/$(conf_read tools-port)
+		sudo sed -i "s/<port>/$(conf_read tools-port)/g"  /etc/nginx/sites-available/$(conf_read tools-port)
+		sudo nginx -t && sudo systemctl reload nginx
+	fi
 	
-	# Nginx Status Page
-	sudo touch /var/www/$(conf_read tools-port)/htdocs/nginx_status	
-	
-	# Robots.txt file in case someone remove HTTP Auth
-	sudo touch /var/www/$(conf_read tools-port)/htdocs/robots.txt
-	echo '# Just in case someone remove HTTP Auth protection.
-Disallow: /' > /var/www/$(conf_read tools-port)/htdocs/robots.txt
-	sudo chmod 644 /var/www/$(conf_read tools-port)/htdocs/robots.txt
-	sudo chown -R www-data:www-data /var/www/$(conf_read tools-port)/htdocs
+	# Don't overwrite in case that exist (after purge with keep-data, for instance)
+	if [[ ! -f /var/www/$(conf_read tools-port)/htdocs ]]; then
+		# Nginx Status Page
+		sudo touch /var/www/$(conf_read tools-port)/htdocs/nginx_status	
+		
+		# Robots.txt file in case someone remove HTTP Auth
+		sudo touch /var/www/$(conf_read tools-port)/htdocs/robots.txt
+		echo '# Just in case someone remove HTTP Auth protection.
+	Disallow: /' > /var/www/$(conf_read tools-port)/htdocs/robots.txt
+		sudo chmod 644 /var/www/$(conf_read tools-port)/htdocs/robots.txt
+		sudo chown -R www-data:www-data /var/www/$(conf_read tools-port)/htdocs
+	fi
 	
 	# in case php was installed before nginx
 	[[ $(conf_read php) == "true" && ! -f /var/www/$(conf_read tools-port)/htdocs/php/index.php ]] && php_tool_site
diff --git a/lib/webin b/lib/webin
index e45d449..718d453 100644
--- a/lib/webin
+++ b/lib/webin
@@ -414,7 +414,6 @@ server_reset() {
 	
 	# Regenerate NGINX conf files
 	if [[ $(conf_read nginx-optim) == "true" && $server_reset =~ ^(nginx|all)$ ]]; then		
-		sudo sed -i '/WebinolyCustom/,/WebinolyCustomEnd/{/.*/d}' /etc/nginx/fastcgi_params
 		sudo rm -rf /etc/nginx/common
 		#sudo rm -rf /etc/nginx/conf.d/* - Some custom files can be in this folder, so don't remove it, just the core files!
 		[[ -f /etc/nginx/conf.d/upstream.conf ]] && sudo rm -rf /etc/nginx/conf.d/upstream.conf
diff --git a/usr/stack b/usr/stack
index a7f93ad..484aa35 100644
--- a/usr/stack
+++ b/usr/stack
@@ -40,6 +40,20 @@ purge_mysql_client() {
 	conf_write mysql-client purged
 }
 
+purge_nginx_tools() {
+	# Remove additional tools
+	[[ $(conf_read login-www-data) == "true" ]] && webinoly -login-www-data=off
+	[[ $(conf_read nginx-tool-ssl) == "true" ]] && stack -letsencrypt -purge=force
+	[[ $(conf_read nginx-tool-bkp) == "true" ]] && stack -backups -purge=force
+	[[ $(conf_read mysql-tool-pma) == "true" ]] && stack -pma -purge=force
+	
+	[[ -d /var/www ]] && sudo rm -rf /var/www/*
+	[[ -n $(conf_read tools-site) ]] && conf_delete tools-site -commented
+	[[ -n $(conf_read default-response) ]] && conf_delete default-response -commented
+	[[ -n $(conf_read default-site) ]] && conf_delete default-site
+}
+
+
 #############################################
 ########   Delete/Purge some stack   ########
 #############################################
@@ -48,6 +62,14 @@ if [[ -n $purge && ( -n $html || -n $nginx ) ]]; then
 	api-events_update pn1
 	if [[ $(conf_read nginx) != "true" ]]; then
 		echo "${dim}Nginx is not installed, hence can not be deleted! ${end}"
+		purge_nginx_tools # In case of nginx purged with keep-data before.
+		
+		# Just in case, nginx purged with keep-data before can preserve some remanent data, for instance!
+		if [[ -d /etc/nginx ]]; then
+			sudo apt -y purge nginx
+			echo "${gre}${dim}Nginx remanent data found and removed!${end}"
+		fi
+		
 		clear_force_flag
 	else		
 		if [[ $(conf_read force-flag) != "true" ]]; then
@@ -64,7 +86,9 @@ if [[ -n $purge && ( -n $html || -n $nginx ) ]]; then
 		fi
 		
 		if [[ $answer == [Yy] || $(conf_read force-flag) == "true" ]]; then
-			if [[ $(conf_read force-flag) == "true" && $force == 1 ]]; then
+			if [[ $nginx == "keep-data" ]]; then
+				answer="N"
+			elif [[ $(conf_read force-flag) == "true" && $force == 1 ]]; then
 				answer="Y"
 			else
 				echo ""
@@ -79,19 +103,16 @@ if [[ -n $purge && ( -n $html || -n $nginx ) ]]; then
 				site -delete-all=force
 			fi
 			
-			# Remove tools-site
-			[[ $(conf_read mysql-tool-pma) == "true" ]] && stack -pma -purge=force
-			sudo rm -rf /var/www/html
-			sudo rm -rf /var/www/$(conf_read tools-port)
-			conf_delete tools-site -commented
-			
-			[[ $(conf_read login-www-data) == "true" ]] && webinoly -login-www-data=off
-			[[ $(conf_read nginx-tool-ssl) == "true" ]] && stack -letsencrypt -purge=force
-			[[ $(conf_read nginx-tool-bkp) == "true" ]] && stack -backups -purge=force
 			purge_autoremove="true"
-			
 			sudo systemctl stop nginx
-			sudo apt -y purge nginx
+			
+			if [[ $nginx != "keep-data" ]]; then
+				purge_nginx_tools
+				sudo apt -y purge nginx
+			else
+				sudo apt -y remove nginx
+				echo "${blu}Nginx data (including your sites) and configuration was NOT removed.${end}"
+			fi
 			
 			# APT-KEY deprecated in 22.04
 			if [[ $(lsb_release -c | cut -d':' -f 2 | xargs) =~ ^(bionic|focal)$ ]]; then
@@ -106,12 +127,6 @@ if [[ -n $purge && ( -n $html || -n $nginx ) ]]; then
 				sudo rm -rf /etc/apt/sources.list.d/nginx.list
 			fi
 			
-			# Remove SSL Cron
-			if [[ -f /var/spool/cron/crontabs/root ]]; then
-				sudo sed -i '/MAILTO=/d' /var/spool/cron/crontabs/root
-				sudo sed -i '/certbot renew/d' /var/spool/cron/crontabs/root
-			fi
-			
 			[ -L $CURRENT_HOME/www ] && sudo rm $CURRENT_HOME/www
 			[ -L $CURRENT_HOME/sites-available ] && sudo rm $CURRENT_HOME/sites-available
 			
@@ -301,7 +316,14 @@ elif [[ -n $purge && -n $letsencrypt ]]; then
 		fi
 
 		if [[ $answer == [Yy] || $(conf_read force-flag) == "true" ]]; then
-			sudo snap remove certbot
+			# Remove SSL Cron
+			if [[ -f /var/spool/cron/crontabs/root ]]; then
+				sudo sed -i '/MAILTO=/d' /var/spool/cron/crontabs/root
+				sudo sed -i '/certbot renew/d' /var/spool/cron/crontabs/root
+			fi
+			
+			# To remove a snap without generating a snapshot, use the additional --purge argument
+			sudo snap remove certbot --purge
 			[[ -L /usr/bin/certbot ]] && sudo rm -rf /usr/bin/certbot
 			conf_write nginx-tool-ssl purged
 			echo ""