diff --git a/vizro-core/src/vizro/_vizro.py b/vizro-core/src/vizro/_vizro.py
index 23a30520d..f5f6886c2 100644
--- a/vizro-core/src/vizro/_vizro.py
+++ b/vizro-core/src/vizro/_vizro.py
@@ -224,6 +224,5 @@ def _make_resource_spec(path: Path) -> _ResourceSpec:
         # irrelevant here. The way the file is requested is through a relative url("./fonts/...") in the requesting
         # CSS file. When the CSS file is served from the CDN then this will refer to the font file also on the CDN.
         resource_spec["dynamic"] = True
-    print(resource_spec)
 
     return resource_spec
diff --git a/vizro-core/src/vizro/models/_dashboard.py b/vizro-core/src/vizro/models/_dashboard.py
index 6ab4559b1..b4311895f 100644
--- a/vizro-core/src/vizro/models/_dashboard.py
+++ b/vizro-core/src/vizro/models/_dashboard.py
@@ -3,7 +3,7 @@
 import base64
 import logging
 from functools import partial
-from pathlib import Path
+from pathlib import Path, PureWindowsPath
 from typing import TYPE_CHECKING, Literal, TypedDict
 
 import dash
@@ -335,4 +335,5 @@ def _infer_image(filename: str):
         if assets_folder.is_dir():
             for path in Path(assets_folder).rglob(f"{filename}.*"):
                 if path.suffix in valid_extensions:
-                    return str(path.relative_to(assets_folder))
+                    # Return path as posix so image source comes out correctly on Windows.
+                    return path.relative_to(assets_folder).as_posix()