diff --git a/scan_explorer_service/manifest_factory.py b/scan_explorer_service/manifest_factory.py
index 3c2c8f3..82ffb77 100644
--- a/scan_explorer_service/manifest_factory.py
+++ b/scan_explorer_service/manifest_factory.py
@@ -68,7 +68,8 @@ def create_image_annotation(self, page: Page):
         image: Image = annotation.image(
             ident=page.image_path, label=f'p. {page.label}', iiif=True)
 
-        image.id = image.id.replace(f'/{page.image_color_quality}.jpg', f'/{page.image_color_quality}.tif')
+        # Override default image quality and format set by prezi
+        image.id = image.id.replace(f'/default.jpg', f'/{page.image_color_quality}.tif')
 
         image.format = page.format
         image.height = page.height
diff --git a/scan_explorer_service/views/image_proxy.py b/scan_explorer_service/views/image_proxy.py
index ddca3fb..b2e05b0 100644
--- a/scan_explorer_service/views/image_proxy.py
+++ b/scan_explorer_service/views/image_proxy.py
@@ -99,7 +99,7 @@ def loop_images(id, page_start, page_end):
                     size = 'full'
                     if dpi != 600:
                         size = str(int(page.width*scaling))+ ","
-                    image_url = page.image_url + "/full/" + size + f"/0/{page.image_color_quality}.png"
+                    image_url = page.image_url + "/full/" + size + f"/0/{page.image_color_quality}.tif"
                     path = urlparse.urlparse(image_url).path
                     remove = urlparse.urlparse(url_for_proxy('proxy.image_proxy', path='')).path
                     path = path.replace(remove, '')