diff --git a/wled00/FX_fcn.cpp b/wled00/FX_fcn.cpp
index e213740ac..4aa4f6d1d 100644
--- a/wled00/FX_fcn.cpp
+++ b/wled00/FX_fcn.cpp
@@ -528,7 +528,7 @@ Segment &Segment::setCCT(uint16_t k) {
     k = (k - 1900) >> 5;
   }
   if (cct != k) {
-    //DEBUGFX_PRINTF_P(PSTR("- Starting CCT transition: %d\n"), k);
+    //DEBUG_PRINTF_P(PSTR("- Starting CCT transition: %d\n"), k);
     startTransition(strip.getTransition()); // start transition prior to change
     cct = k;
     stateChanged = true; // send UDP/WS broadcast
@@ -538,7 +538,7 @@ Segment &Segment::setCCT(uint16_t k) {
 
 Segment &Segment::setOpacity(uint8_t o) {
   if (opacity != o) {
-    //DEBUGFX_PRINTF_P(PSTR("- Starting opacity transition: %d\n"), o);
+    //DEBUG_PRINTF_P(PSTR("- Starting opacity transition: %d\n"), o);
     startTransition(strip.getTransition()); // start transition prior to change
     opacity = o;
     stateChanged = true; // send UDP/WS broadcast
@@ -1870,7 +1870,7 @@ bool WS2812FX::deserializeMap(uint8_t n) {
     #ifdef WLED_DEBUG
     DEBUG_PRINT(F("Loaded ledmap:"));
     for (unsigned i=0; i<customMappingSize; i++) {
-      if (!(i%Segment::maxWidth)) DEBUGFX_PRINTLN();
+      if (!(i%Segment::maxWidth)) DEBUG_PRINTLN();
       DEBUG_PRINTF_P(PSTR("%4d,"), customMappingTable[i]);
     }
     DEBUG_PRINTLN();
diff --git a/wled00/fcn_declare.h b/wled00/fcn_declare.h
index 311f71ef4..aab71685a 100644
--- a/wled00/fcn_declare.h
+++ b/wled00/fcn_declare.h
@@ -107,16 +107,16 @@ void sendArtnetPollReply(ArtPollReply* reply, IPAddress ipAddress, uint16_t port
 
 //file.cpp
 bool handleFileRead(AsyncWebServerRequest*, String path);
-bool writeObjectToFileUsingId(const char* file, uint16_t id, JsonDocument* content);
-bool writeObjectToFile(const char* file, const char* key, JsonDocument* content);
-bool readObjectFromFileUsingId(const char* file, uint16_t id, JsonDocument* dest, JsonDocument* filter = nullptr);
-bool readObjectFromFile(const char* file, const char* key, JsonDocument* dest, JsonDocument* filter = nullptr);
+bool writeObjectToFileUsingId(const char* file, uint16_t id, const JsonDocument* content);
+bool writeObjectToFile(const char* file, const char* key, const JsonDocument* content);
+bool readObjectFromFileUsingId(const char* file, uint16_t id, JsonDocument* dest, const JsonDocument* filter = nullptr);
+bool readObjectFromFile(const char* file, const char* key, JsonDocument* dest, const JsonDocument* filter = nullptr);
 void updateFSInfo();
 void closeFile();
-inline bool writeObjectToFileUsingId(const String &file, uint16_t id, JsonDocument* content) { return writeObjectToFileUsingId(file.c_str(), id, content); };
-inline bool writeObjectToFile(const String &file, const char* key, JsonDocument* content) { return writeObjectToFile(file.c_str(), key, content); };
-inline bool readObjectFromFileUsingId(const String &file, uint16_t id, JsonDocument* dest, JsonDocument* filter = nullptr) { return readObjectFromFileUsingId(file.c_str(), id, dest); };
-inline bool readObjectFromFile(const String &file, const char* key, JsonDocument* dest, JsonDocument* filter = nullptr) { return readObjectFromFile(file.c_str(), key, dest); };
+inline bool writeObjectToFileUsingId(const String &file, uint16_t id, const JsonDocument* content) { return writeObjectToFileUsingId(file.c_str(), id, content); };
+inline bool writeObjectToFile(const String &file, const char* key, const JsonDocument* content) { return writeObjectToFile(file.c_str(), key, content); };
+inline bool readObjectFromFileUsingId(const String &file, uint16_t id, JsonDocument* dest, const JsonDocument* filter = nullptr) { return readObjectFromFileUsingId(file.c_str(), id, dest); };
+inline bool readObjectFromFile(const String &file, const char* key, JsonDocument* dest, const JsonDocument* filter = nullptr) { return readObjectFromFile(file.c_str(), key, dest); };
 
 //hue.cpp
 void handleHue();
diff --git a/wled00/file.cpp b/wled00/file.cpp
index f390bcc0c..1490ba91c 100644
--- a/wled00/file.cpp
+++ b/wled00/file.cpp
@@ -176,7 +176,7 @@ static void writeSpace(size_t l)
   if (knownLargestSpace < l) knownLargestSpace = l;
 }
 
-bool appendObjectToFile(const char* key, JsonDocument* content, uint32_t s, uint32_t contentLen = 0)
+bool appendObjectToFile(const char* key, const JsonDocument* content, uint32_t s, uint32_t contentLen = 0)
 {
   #ifdef WLED_DEBUG_FS
     DEBUGFS_PRINTLN(F("Append"));
@@ -255,14 +255,14 @@ bool appendObjectToFile(const char* key, JsonDocument* content, uint32_t s, uint
   return true;
 }
 
-bool writeObjectToFileUsingId(const char* file, uint16_t id, JsonDocument* content)
+bool writeObjectToFileUsingId(const char* file, uint16_t id, const JsonDocument* content)
 {
   char objKey[10];
   sprintf(objKey, "\"%d\":", id);
   return writeObjectToFile(file, objKey, content);
 }
 
-bool writeObjectToFile(const char* file, const char* key, JsonDocument* content)
+bool writeObjectToFile(const char* file, const char* key, const JsonDocument* content)
 {
   uint32_t s = 0; //timing
   #ifdef WLED_DEBUG_FS
@@ -325,7 +325,7 @@ bool writeObjectToFile(const char* file, const char* key, JsonDocument* content)
   return true;
 }
 
-bool readObjectFromFileUsingId(const char* file, uint16_t id, JsonDocument* dest, JsonDocument* filter)
+bool readObjectFromFileUsingId(const char* file, uint16_t id, JsonDocument* dest, const JsonDocument* filter)
 {
   char objKey[10];
   sprintf(objKey, "\"%d\":", id);
@@ -333,7 +333,7 @@ bool readObjectFromFileUsingId(const char* file, uint16_t id, JsonDocument* dest
 }
 
 //if the key is a nullptr, deserialize entire object
-bool readObjectFromFile(const char* file, const char* key, JsonDocument* dest, JsonDocument* filter)
+bool readObjectFromFile(const char* file, const char* key, JsonDocument* dest, const JsonDocument* filter)
 {
   if (doCloseFile) closeFile();
   #ifdef WLED_DEBUG_FS