only return link if something is cleaned

main.go

@@ -84,6 +84,8 @@ func cleanURL(rawURL string) string {
 					rulesList = append(rulesList, referralMarketing...)
 				}
 				filtered := make(url.Values)
+				changed := false
+
 				for k, v := range queryParams {
 					shouldFilter := false
 					for _, rule := range rulesList {
@@ -94,10 +96,15 @@ func cleanURL(rawURL string) string {
 					}
 					if !shouldFilter {
 						filtered[k] = v
+					} else {
+						changed = true
 					}
 				}
-				parsedURL.RawQuery = filtered.Encode()
-				return parsedURL.String() // Always return the cleaned URL if pattern matches
+
+				if changed {
+					parsedURL.RawQuery = filtered.Encode()
+					return parsedURL.String()
+				}
 			}
 		}
 	}