diff --git a/.gitignore b/.gitignore
index ba74660..1f77a46 100644
--- a/.gitignore
+++ b/.gitignore
@@ -55,3 +55,9 @@ docs/_build/
 
 # PyBuilder
 target/
+
+# IDEA
+.idea
+
+# Test files
+*.json
diff --git a/ttsmirror.py b/ttsmirror.py
new file mode 100644
index 0000000..61f15bb
--- /dev/null
+++ b/ttsmirror.py
@@ -0,0 +1,81 @@
+import os
+import logging
+import requests
+from urllib.parse import urlparse, urljoin
+import json
+import shutil
+
+__version__ = '0.1'
+__author__ = 'Andrew Williams'
+
+
+def iterate_save(obj, output_path, url_prefix):
+    """
+    Iterate a save, download assets, and update the locations as needed
+    :param obj:
+    :param output_path:
+    :param url_prefix:
+    :return:
+    :rtype: dict
+    """
+    if isinstance(obj, dict):
+        iter = obj.items()
+    elif isinstance(obj, list):
+        iter = enumerate(obj)
+
+    for key, val in iter:
+        if isinstance(val, dict) or isinstance(val, list):
+            res = iterate_save(val, output_path, url_prefix)
+            obj[key] = res
+        if isinstance(val, str):
+            parsed = urlparse(val)
+            if parsed.scheme and parsed.scheme in ['http', 'https', 'ftp']:
+                # Generate new filename
+                new_filename = val
+                for rep in [':', '/', '?', '=']:
+                    new_filename = new_filename.replace(rep, '_')
+                # Check if exists
+                if not os.path.exists(os.path.join(output_path, new_filename)):
+                    res = requests.get(val, stream=True)
+                    if res.ok:
+                        res.raw.decode_content = True
+                        with open(os.path.join(output_path, new_filename), 'wb') as outfile:
+                            for chunk in res:
+                                outfile.write(chunk)
+                obj[key] = urljoin(url_prefix, new_filename)
+    return obj
+
+
+def process_save(filename, output_path, url_prefix):
+    new_filename = '%s_new.json' % filename.replace('.', '_')
+    with open(filename, 'r') as fobj:
+        save = json.load(fobj)
+    new_save = iterate_save(save, output_path, url_prefix)
+    new_save['SaveName'] = '%s - Mirrored' % new_save['SaveName']
+    with open(new_filename, 'w') as outfobj:
+        outfobj.write(json.dumps(new_save))
+    logging.debug('Done, wrote %s', new_filename)
+
+
+def main():
+    import argparse
+    import os
+    import sys
+
+    parser = argparse.ArgumentParser('ttsmirror.py')
+    parser.add_argument('save_file')
+    parser.add_argument('output_path', default=os.path.curdir)
+    parser.add_argument('url_prefix')
+
+    logging.basicConfig(level=logging.DEBUG)
+    args = parser.parse_args()
+
+    if not os.path.exists(os.path.abspath(args.save_file)):
+        logging.error('Unknown file %s' % args.save_file)
+        sys.exit(1)
+
+    process_save(args.save_file, args.output_path, args.url_prefix)
+
+
+if __name__ == '__main__':
+    main()
\ No newline at end of file