diff --git a/generate_html.py b/generate_html.py
index 0a0274d..a598a04 100755
--- a/generate_html.py
+++ b/generate_html.py
@@ -2,6 +2,7 @@
 import os
 import argparse
 import urllib.parse
+import shutil
 from multiprocessing import Pool
 from string import Template
 import numpy as np
@@ -154,9 +155,9 @@ HTMLHEADER = """
 def thumbnail_convert(arguments: tuple[str, str]):
     folder, item = arguments
     if not os.path.exists(os.path.join(args.root, ".previews", folder.removeprefix(args.root), os.path.splitext(item)[0] + ".jpg")) or args.regenerate:
-        try:
+        if shutil.which("magick"):
             os.system(f'magick "{os.path.join(folder, item)}" -quality 75% -define jpeg:size=1024x1024 -define jpeg:extent=100kb -thumbnail 512x512 -auto-orient "{os.path.join(args.root, ".previews", folder.removeprefix(args.root), os.path.splitext(item)[0])}.jpg"')
-        except:
+        else:
             os.system(f'convert "{os.path.join(folder, item)}" -quality 75% -define jpeg:size=1024x1024 -define jpeg:extent=100kb -thumbnail 512x512 -auto-orient "{os.path.join(args.root, ".previews", folder.removeprefix(args.root), os.path.splitext(item)[0])}.jpg"')