diff --git a/ecstore/src/store_utils.rs b/ecstore/src/store_utils.rs
new file mode 100644
index 000000000..358710c38
--- /dev/null
+++ b/ecstore/src/store_utils.rs
@@ -0,0 +1,21 @@
+use crate::config::storageclass::STANDARD;
+use crate::xhttp::AMZ_OBJECT_TAGGING;
+use crate::xhttp::AMZ_STORAGE_CLASS;
+use std::collections::HashMap;
+
+pub fn clean_metadata(metadata: &mut HashMap<String, String>) {
+    remove_standard_storage_class(metadata);
+    clean_metadata_keys(metadata, &["md5Sum", "etag", "expires", AMZ_OBJECT_TAGGING, "last-modified"]);
+}
+
+pub fn remove_standard_storage_class(metadata: &mut HashMap<String, String>) {
+    if metadata.get(AMZ_STORAGE_CLASS) == Some(&STANDARD.to_string()) {
+        metadata.remove(AMZ_STORAGE_CLASS);
+    }
+}
+
+pub fn clean_metadata_keys(metadata: &mut HashMap<String, String>, key_names: &[&str]) {
+    for key in key_names {
+        metadata.remove(key.to_owned());
+    }
+}