Lazy load thumbnails

src/index.svelte

@@ -67,7 +67,7 @@
 {#if file_list}
   <section class="flex flex-row justify-center flex-wrap">
     {#each thumb_list as thumb, i}
-      <img class="m-1" on:click={() => open_lightbox(i)} src="{url.root}{url.thumb}{thumb}" />
+      <img loading="lazy" class="m-1" on:click={() => open_lightbox(i)} src="{url.root}{url.thumb}{thumb}" />
     {/each}
   </section>
 {/if}