diff --git a/src/main/python/safetensors/json_to_bin.py b/src/main/python/safetensors/json_to_bin.py
index be9c7c34b..18e7012be 100644
--- a/src/main/python/safetensors/json_to_bin.py
+++ b/src/main/python/safetensors/json_to_bin.py
@@ -3,12 +3,22 @@
 import os
 import argparse
 import gzip
+import logging
 from safetensors.torch import save_file, load_file
+from tqdm import tqdm  # Import tqdm for progress bars
+
+# Set up logging to both console and file
+log_file_path = 'process_log.log'
+logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(levelname)s - %(message)s', handlers=[
+    logging.FileHandler(log_file_path),  # Log detailed information to a file
+    logging.StreamHandler()  # Log high-level information to the console
+])
 
 # Set up argument parser
-parser = argparse.ArgumentParser(description='Process vectors and docids from JSONL or GZ files.')
-parser.add_argument('--input', required=True, help='Path to the input JSONL or GZ file')
+parser = argparse.ArgumentParser(description='Process vectors and docids from JSON, JSONL, or GZ files.')
+parser.add_argument('--input', required=True, help='Path to the input JSON, JSONL, or GZ file')
 parser.add_argument('--output', required=True, help='Path to the output directory')
+parser.add_argument('--overwrite', action='store_true', help='Overwrite existing files if they already exist')
 
 args = parser.parse_args()
 
@@ -16,60 +26,91 @@
 input_file_path = args.input
 output_directory = args.output
 
-# Ensure the output directory exists
-if not os.path.exists(output_directory):
-    os.makedirs(output_directory)
-
-# Check if the input file is a .gz file and convert it to .jsonl if necessary
-if input_file_path.endswith('.gz'):
-    with gzip.open(input_file_path, 'rt') as gz_file:
-        jsonl_file_path = input_file_path.replace('.gz', '.jsonl')
-        with open(jsonl_file_path, 'w') as jsonl_file:
-            for line in gz_file:
-                jsonl_file.write(line)
-    input_file_path = jsonl_file_path
+# Ensure the input file exists
+if not os.path.exists(input_file_path):
+    logging.error(f"Input file '{input_file_path}' not found.")
+    raise FileNotFoundError(f"Input file '{input_file_path}' not found.")
 
-# Check if the input file is a .jsonl file
-elif not input_file_path.endswith('.jsonl'):
-    raise ValueError("Input file must be a .jsonl or .gz file")
+# Ensure the output directory exists or create it
+try:
+    os.makedirs(output_directory, exist_ok=True)
+except OSError as e:
+    logging.error(f"Failed to create output directory '{output_directory}': {e}")
+    raise OSError(f"Failed to create output directory '{output_directory}': {e}")
 
 # Get the base name of the input file for output file names
-base_name = os.path.basename(input_file_path).replace('.jsonl', '')
+base_name = os.path.basename(input_file_path).replace('.jsonl', '').replace('.gz', '').replace('.json', '')
 
 vectors_path = os.path.join(output_directory, f'{base_name}_vectors.safetensors')
 docids_path = os.path.join(output_directory, f'{base_name}_docids.safetensors')
 
+if not args.overwrite:
+    if os.path.exists(vectors_path) or os.path.exists(docids_path):
+        logging.error(f"Output files '{vectors_path}' or '{docids_path}' already exist. Use '--overwrite' to overwrite.")
+        raise FileExistsError(f"Output files '{vectors_path}' or '{docids_path}' already exist. Use '--overwrite' to overwrite.")
+
 # Initialize lists to hold data
 vectors = []
 docids = []
 
-# Process the JSONL file to extract vectors and docids
-with open(input_file_path, 'r') as file:
-    for line in file:
-        entry = json.loads(line)
-        # Ensure that the vector starts with a valid number
-        if isinstance(entry['vector'][0], float):
-            vectors.append(entry['vector'])
-            docid = entry['docid']
-            docid_ascii = [ord(char) for char in docid]  # Convert docid to ASCII values
-            docids.append(docid_ascii)
-        else:
-            print(f"Skipped invalid vector entry with docid: {entry['docid']}")
+# Determine file opener based on file extension
+if input_file_path.endswith('.gz'):
+    file_opener = gzip.open
+elif input_file_path.endswith('.jsonl') or input_file_path.endswith('.json'):
+    file_opener = open
+else:
+    logging.error("Input file must be a .json, .jsonl, or .gz file")
+    raise ValueError("Input file must be a .json, .jsonl, or .gz file")
+
+# Get total number of lines for tqdm if possible
+try:
+    total_lines = sum(1 for _ in file_opener(input_file_path, 'rt'))
+except Exception:
+    total_lines = None
+
+# Process the JSON, JSONL, or GZ file to extract vectors and docids
+try:
+    with file_opener(input_file_path, 'rt') as file:
+        for line in tqdm(file, total=total_lines, desc="Processing lines"):
+            try:
+                entry = json.loads(line)
+                if isinstance(entry.get('vector', [None])[0], float):
+                    vectors.append(entry['vector'])
+                    docid = entry['docid']
+                    docid_ascii = [ord(char) for char in docid]  # Convert docid to ASCII values
+                    docids.append(docid_ascii)
+                else:
+                    logging.warning(f"Skipped invalid vector entry with docid: {entry.get('docid', 'N/A')}")
+            except (json.JSONDecodeError, KeyError) as e:
+                logging.warning(f"Skipped invalid JSON entry: {e}")
+except IOError as e:
+    logging.error(f"Failed to read the input file '{input_file_path}': {e}")
+    raise IOError(f"Failed to read the input file '{input_file_path}': {e}")
 
 # Convert lists to tensors
 vectors_tensor = torch.tensor(vectors, dtype=torch.float64)
 docids_tensor = torch.nn.utils.rnn.pad_sequence([torch.tensor(d, dtype=torch.int64) for d in docids], batch_first=True)
 
 # Save the tensors to SafeTensors files
-save_file({'vectors': vectors_tensor}, vectors_path)
-save_file({'docids': docids_tensor}, docids_path)
-
-print(f"Saved vectors to {vectors_path}")
-print(f"Saved docids to {docids_path}")
-
-# Load vectors and docids
-loaded_vectors = load_file(vectors_path)['vectors']
-loaded_docids = load_file(docids_path)['docids']
+try:
+    save_file({'vectors': vectors_tensor}, vectors_path)
+    save_file({'docids': docids_tensor}, docids_path)
+    logging.info(f"Saved vectors to {vectors_path}")
+    logging.info(f"Saved docids to {docids_path}")
+except IOError as e:
+    logging.error(f"Failed to save tensors: {e}")
+    raise IOError(f"Failed to save tensors: {e}")
 
-print(f"Loaded vectors: {loaded_vectors}")
-print(f"Loaded document IDs (ASCII): {loaded_docids}")
+# Load vectors and docids for verification
+try:
+    loaded_vectors = load_file(vectors_path)['vectors']
+    loaded_docids = load_file(docids_path)['docids']
+    logging.info(f"Loaded vectors from {vectors_path}")
+    logging.info(f"Loaded document IDs (ASCII) from {docids_path}")
+    # Log detailed information to the file
+    logging.getLogger().handlers[0].setLevel(logging.DEBUG)
+    logging.debug(f"Loaded vectors: {loaded_vectors}")
+    logging.debug(f"Loaded document IDs (ASCII): {loaded_docids}")
+except IOError as e:
+    logging.error(f"Failed to load tensors: {e}")
+    raise IOError(f"Failed to load tensors: {e}")
\ No newline at end of file
diff --git a/src/main/python/safetensors/requirements.txt b/src/main/python/safetensors/requirements.txt
index c721731d8..64a61aaa8 100644
--- a/src/main/python/safetensors/requirements.txt
+++ b/src/main/python/safetensors/requirements.txt
@@ -23,4 +23,5 @@ six==1.16.0
 sympy==1.12
 torch==2.3.0
 typing_extensions==4.11.0
-urllib3==2.2.1
\ No newline at end of file
+urllib3==2.2.1
+tqdm==4.66.5
\ No newline at end of file