diff --git a/webui/src/components/display/BlobPreview.svelte b/webui/src/components/display/BlobPreview.svelte
index 089bcd9..5d37617 100644
--- a/webui/src/components/display/BlobPreview.svelte
+++ b/webui/src/components/display/BlobPreview.svelte
@@ -60,7 +60,7 @@
           </div>
         {/if}
         <img
-          src="{API_URL}/thumb/{address}"
+          src="{API_URL}/thumb/{address}?size=512&quality=75"
           alt="Thumbnail for {address}..."
           on:load={() => (imageLoaded = address)}
           on:error={() => (handled = false)}