diff --git a/main.go b/main.go
index 591628a134252cc54844a48cfc0c43eda795cc56..69a449ec00f714468494ec39f5a2c62c2b4eb366 100644
--- a/main.go
+++ b/main.go
@@ -29,7 +29,7 @@ func init() {
 	ErrorLogger = log.New(os.Stdout, "ERROR: ", log.Ldate|log.Ltime)
 }
 
-// serve certificates list
+// serve certificates JSON
 func renderJSON(w http.ResponseWriter, req *http.Request) {
 	provider := strings.Split(req.URL.Path, "/")[2]
 	serveFile := fmt.Sprintf("%v/%v/%v.json", webDir, provider, provider)
@@ -42,7 +42,7 @@ func renderJSON(w http.ResponseWriter, req *http.Request) {
 		if verboseBool {
 			InfoLogger.Printf("HTTP Status %v", http.StatusOK)
 		}
-		w.Header().Set("Content-Type", "application/json; charset=utf-8")
+		w.Header().Set("Content-Type", "application/json")
 	}
 	http.ServeFile(w, req, serveFile)
 }
@@ -60,7 +60,7 @@ func renderPage(w http.ResponseWriter, req *http.Request) {
 		if verboseBool {
 			InfoLogger.Printf("HTTP Status %v", http.StatusOK)
 		}
-		w.Header().Set("Content-Type", "text/html; charset=utf-8")
+		w.Header().Set("Content-Type", "text/html")
 	}
 	http.ServeFile(w, req, serveFile)
 }
@@ -110,9 +110,12 @@ Options:
 	baseURLs := [6]string{"/sectigo_ev", "/sectigo_ov", "/letsencrypt", "/sectigo_ev/", "/sectigo_ov/", "/letsencrypt/"}
 	apiURLs := [6]string{"/api/sectigo_ev", "/api/sectigo_ov", "/api/letsencrypt",
 		"/api/sectigo_ev/", "/api/sectigo_ov/", "/api/letsencrypt/"}
-	otherURLs := [6]string{"/letsencrypt/by_name.html", "/letsencrypt/by_date.html",
+	otherURLs := [12]string{"/letsencrypt/by_name.html", "/letsencrypt/by_date.html",
+		"/letsencrypt/letsencrypt.json", "/letsencrypt/letsencrypt_expired.json",
 		"/sectigo_ov/by_name.html", "/sectigo_ov/by_date.html",
-		"/sectigo_ev/by_name.html", "/sectigo_ev/by_date.html"}
+		"/sectigo_ov/sectigo_ov.json", "/sectigo_ov/sectigo_ov_expired.json",
+		"/sectigo_ev/by_name.html", "/sectigo_ev/by_date.html",
+		"/sectigo_ev/sectigo_ev.json", "/sectigo_ev/sectigo_ev_expired.json"}
 
 	fs := http.FileServer(http.Dir("/var/www/acme_web/static"))
 	http.Handle("/static/", http.StripPrefix("/static/", fs))