diff --git a/fast_saver.py b/fast_saver.py
index 2731fb1..ada255b 100644
--- a/fast_saver.py
+++ b/fast_saver.py
@@ -190,7 +190,7 @@ class FastAbsoluteSaver:
     RETURN_TYPES = ()
     FUNCTION = "save_images_fast"
     OUTPUT_NODE = True
-    CATEGORY = "utils/io"
+    CATEGORY = "JSON Dynamic/io"
 
     def parse_info(self, info_str, batch_size):
         if not info_str:
@@ -433,6 +433,9 @@ class FastAbsoluteSaver:
                          scores_info=None, prompt=None, extra_pnginfo=None):
 
         output_path = output_path.strip('"')
+        if not os.path.isabs(output_path):
+            import folder_paths
+            output_path = os.path.join(folder_paths.base_path, output_path)
         if not os.path.exists(output_path):
             try:
                 os.makedirs(output_path, exist_ok=True)
diff --git a/image_preview.py b/image_preview.py
index 67f190e..1ad6863 100644
--- a/image_preview.py
+++ b/image_preview.py
@@ -93,7 +93,7 @@ class JDL_PreviewToLoad:
     RETURN_TYPES = ()
     FUNCTION = "preview_and_save"
     OUTPUT_NODE = True
-    CATEGORY = "utils/image"
+    CATEGORY = "JSON Dynamic/image"
 
     def preview_and_save(self, images, filename="preview", mask=None, prompt=None, extra_pnginfo=None):
         # Save to temp/ for preview (same as PreviewImage)
@@ -234,7 +234,7 @@ class JDL_LoadImage:
 
     RETURN_TYPES = ("IMAGE", "MASK")
     FUNCTION = "load_image"
-    CATEGORY = "utils/image"
+    CATEGORY = "JSON Dynamic/image"
 
     def load_image(self, image, active):
         if not active:
@@ -277,7 +277,7 @@ class JDL_ImageReceiver:
     RETURN_TYPES = ("IMAGE", "MASK", "STRING")
     RETURN_NAMES = ("image", "mask", "filename")
     FUNCTION = "receive"
-    CATEGORY = "utils/image"
+    CATEGORY = "JSON Dynamic/image"
 
     def receive(self, channel, active):
         if not active:
diff --git a/json_loader_dynamic.py b/json_loader_dynamic.py
index 8a10b02..bbc0129 100644
--- a/json_loader_dynamic.py
+++ b/json_loader_dynamic.py
@@ -98,7 +98,7 @@ class JSONDynamicLoader:
     RETURN_TYPES = tuple(any_type for _ in range(MAX_DYNAMIC_OUTPUTS))
     RETURN_NAMES = tuple(f"output_{i}" for i in range(MAX_DYNAMIC_OUTPUTS))
     FUNCTION = "load_dynamic"
-    CATEGORY = "utils/json"
+    CATEGORY = "JSON Dynamic/json"
     OUTPUT_NODE = False
 
     def load_dynamic(self, json_path, sequence_number, output_keys="", output_types=""):
diff --git a/string_utils.py b/string_utils.py
index d14c360..66d1e26 100644
--- a/string_utils.py
+++ b/string_utils.py
@@ -30,7 +30,7 @@ class JDL_PathJoin:
     RETURN_TYPES = ("STRING",)
     RETURN_NAMES = ("path",)
     FUNCTION = "join_path"
-    CATEGORY = "utils/path"
+    CATEGORY = "JSON Dynamic/string"
 
     def join_path(self, segment_1, segment_2="", segment_3="", segment_4="",
                   segment_5="", segment_6=""):
@@ -59,7 +59,7 @@ class JDL_StringFormat:
     RETURN_TYPES = ("STRING",)
     RETURN_NAMES = ("string",)
     FUNCTION = "format_string"
-    CATEGORY = "utils/string"
+    CATEGORY = "JSON Dynamic/string"
 
     def format_string(self, template, **kwargs):
         values = []
@@ -92,7 +92,7 @@ class JDL_StringExtract:
     RETURN_TYPES = ("STRING", "STRING", "STRING", "STRING")
     RETURN_NAMES = ("result", "dirname", "basename", "extension")
     FUNCTION = "extract"
-    CATEGORY = "utils/string"
+    CATEGORY = "JSON Dynamic/string"
 
     def extract(self, text, mode, delimiter="/", index=-1, delimiter_2=""):
         dirname = os.path.dirname(text)
@@ -145,7 +145,7 @@ class JDL_StringSwitch:
     RETURN_TYPES = (any_type,)
     RETURN_NAMES = ("result",)
     FUNCTION = "switch"
-    CATEGORY = "utils/string"
+    CATEGORY = "JSON Dynamic/string"
 
     def switch(self, condition, on_true=None, on_false=None,
                default_true="", default_false=""):
@@ -173,7 +173,7 @@ class JDL_DependencyPassthrough:
     RETURN_TYPES = (any_type,)
     RETURN_NAMES = ("data",)
     FUNCTION = "passthrough"
-    CATEGORY = "utils/flow"
+    CATEGORY = "JSON Dynamic/flow"
 
     def passthrough(self, data, wait_for=None):
         return (data,)