diff --git a/scripts/_common.sh b/scripts/_common.sh
index 05a7907..bb04a03 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -1,2 +1,13 @@
 #!/bin/bash
 
+# ============= FUTURE YUNOHOST HELPER =============
+# Delete a file checksum from the app settings
+#
+# $app should be defined when calling this helper
+#
+# usage: ynh_remove_file_checksum file
+# | arg: file - The file for which the checksum will be deleted
+ynh_delete_file_checksum () {
+	local checksum_setting_name=checksum_${1//[\/ ]/_}	# Replace all '/' and ' ' by '_'
+	ynh_app_setting_delete $app $checksum_setting_name
+}
\ No newline at end of file
diff --git a/scripts/change_url b/scripts/change_url
new file mode 100644
index 0000000..51b3b36
--- /dev/null
+++ b/scripts/change_url
@@ -0,0 +1,93 @@
+#!/bin/bash
+
+#=================================================
+# GENERIC STARTING
+#=================================================
+# IMPORT GENERIC HELPERS
+#=================================================
+
+source _common.sh
+source /usr/share/yunohost/helpers
+
+#=================================================
+# RETRIEVE ARGUMENTS
+#=================================================
+
+old_domain=$YNH_APP_OLD_DOMAIN
+old_path=$YNH_APP_OLD_PATH
+
+new_domain=$YNH_APP_NEW_DOMAIN
+new_path=$YNH_APP_NEW_PATH
+
+app=$YNH_APP_INSTANCE_NAME
+
+#=================================================
+# CHECK THE SYNTAX OF THE PATHS
+#=================================================
+
+test -n "$old_path" || old_path="/"
+test -n "$new_path" || new_path="/"
+new_path=$(ynh_normalize_url_path $new_path)
+old_path=$(ynh_normalize_url_path $old_path)
+
+#=================================================
+# CHECK WHICH PARTS SHOULD BE CHANGED
+#=================================================
+
+change_domain=0
+if [ "$old_domain" != "$new_domain" ]
+then
+	change_domain=1
+fi
+
+change_path=0
+if [ "$old_path" != "$new_path" ]
+then
+	change_path=1
+fi
+
+#=================================================
+# STANDARD MODIFICATIONS
+#=================================================
+# MODIFY URL IN NGINX CONF
+#=================================================
+
+nginx_conf_path=/etc/nginx/conf.d/$old_domain.d/$app.conf
+
+# Change the path in the nginx config file
+if [ $change_path -eq 1 ]
+then
+  # Make a backup of the original nginx config file if modified
+  ynh_backup_if_checksum_is_different "$nginx_conf_path"
+  # Replace locations starting with old_path
+  # Look for every location possible patterns (see https://nginx.org/en/docs/http/ngx_http_core_module.html#location)
+  ynh_replace_string "location\( \(=\|~\|~\*\|\^~\)\)\? $old_path" "location\1 $new_path"  "$nginx_conf_path"
+  # Replace path in "return" directives
+  ynh_replace_string "return \([[:digit:]]\{3\}\) $old_path" "return \1 $new_path"  "$nginx_conf_path"
+  # Calculate and store the nginx config file checksum
+  ynh_store_file_checksum "$nginx_conf_path"
+fi
+
+# Change the domain for nginx
+if [ $change_domain -eq 1 ]
+then
+  # Delete file checksum for the old conf file location
+  ynh_delete_file_checksum "$nginx_conf_path"
+	mv $nginx_conf_path /etc/nginx/conf.d/$new_domain.d/$app.conf
+  # Store file checksum for the new config file location
+  ynh_store_file_checksum "/etc/nginx/conf.d/$new_domain.d/$app.conf"
+fi
+
+#=================================================
+# SPECIFIC MODIFICATIONS
+#=================================================
+# ...
+#=================================================
+
+#=================================================
+# GENERIC FINALISATION
+#=================================================
+# RELOAD NGINX
+#=================================================
+
+systemctl reload nginx