diff --git a/scripts/_common b/scripts/_common
index 734d05a..437774e 100644
--- a/scripts/_common
+++ b/scripts/_common
@@ -290,4 +290,28 @@ ynh_exit_properly () {
 ynh_abort_if_errors () {
   set -eu # Exit if a command fail, and if a variable is used unset.
   trap ynh_exit_properly EXIT # Capturing exit signals on shell script
+}
+
+# Normalize the url path syntax
+# Handle the slash at the beginning of path and its absence at ending
+# Return a normalized url path
+#
+# example: url_path=$(ynh_normalize_url_path $url_path)
+#          ynh_normalize_url_path example -> /example
+#          ynh_normalize_url_path /example -> /example
+#          ynh_normalize_url_path /example/ -> /example
+#          ynh_normalize_url_path / -> /
+#
+# usage: ynh_normalize_url_path path_to_normalize
+# | arg: url_path_to_normalize - URL path to normalize before using it
+ynh_normalize_url_path () {
+  path_url=$1
+  test -n "$path_url" || ynh_die "ynh_normalize_url_path expect a URL path as first argument and received nothing."
+  if [ "${path_url:0:1}" != "/" ]; then    # If the first character is not a /
+    path_url="/$path_url"    # Add / at begin of path variable
+  fi
+  if [ "${path_url:${#path_url}-1}" == "/" ] && [ ${#path_url} -gt 1 ]; then    # If the last character is a / and that not the only character.
+    path_url="${path_url:0:${#path_url}-1}" # Delete the last character
+  fi
+  echo $path_url
 }
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