diff --git a/ifcbdb/dashboard/urls.py b/ifcbdb/dashboard/urls.py
index 5e9d481d..ad3e835a 100644
--- a/ifcbdb/dashboard/urls.py
+++ b/ifcbdb/dashboard/urls.py
@@ -99,6 +99,9 @@ def to_url(self, value):
     path('<slug:dataset_name>/<slug:bin_id>_<int:target>.png', views.image_png_legacy, name='image_png_legacy'),
     path('<slug:dataset_name>/<slug:bin_id>_<int:target>.jpg', views.image_jpg_legacy, name='image_jpg_legacy'),
 
+    # legacy blob access
+    path('<slug:dataset_name>/<slug:bin_id>_<int:target>_blob.png', views.image_blob_legacy, name='image_blob_legacy'),
+
     # legacy feed API
     path('<ds_plus_tags>/api/feed/<slug:metric>/start/<start>/end/<end>', views.feed_legacy, name='feed_legacy'),
 
diff --git a/ifcbdb/dashboard/views.py b/ifcbdb/dashboard/views.py
index 97aab275..c8c5ff84 100644
--- a/ifcbdb/dashboard/views.py
+++ b/ifcbdb/dashboard/views.py
@@ -541,6 +541,18 @@ def image_data(request, bin_id, target):
     })
 
 
+def image_blob_legacy(request, bin_id, target, dataset_name):
+    bin, _ = bin_in_dataset_or_404(bin_id, dataset_name)
+    try:
+        arr = bin.blob(int(target)) if bin.has_blobs() else None
+    except KeyError:
+        raise Http404(f"blob data not found for target {target} in bin {bin_id}")
+    if arr is None:
+        raise Http404(f"bin {bin_id} has no associated blob data")
+    png_data = format_image(arr, 'image/png')
+    return HttpResponse(png_data, content_type='image/png')
+
+
 def image_blob(request, bin_id, target):
     bin = get_object_or_404(Bin, pid=bin_id)
     blob = embed_image(bin.blob(int(target))) if bin.has_blobs() else None