img: reduce image sizes by lowering quality

_includes/homepage.vto

@@ -8,7 +8,7 @@
         <source media="(min-width: 800px) and (max-width: 1400)" srcset="/img/logo-500.jpg" />
         <source media="(min-width: 1401px) and (max-width: 1899px)" srcset="/img/logo-700.jpg" />
         <source media="(min-width: 1900px)" srcset="/img/logo-1000.jpg" />
-        <img class="mi-logo--img" src="/img/logo-1000.jpg" alt="MiOM Logo" />
+        <img class="mi-logo--img" src="/img/logo-500.jpg" alt="MiOM Logo" />
       </picture>
     </div>
 
@@ -26,7 +26,7 @@
           <source media="(min-width: 501px)" srcset="/img/home-{{ card.image.url }}-700.jpg" />
           <img
             class="mi-card--background"
-            src="/img/home-{{ card.image.url }}-700.jpg"
+            src="/img/home-{{ card.image.url }}-500.jpg"
             alt="{{ card.image.alt }}"
           />
         </picture>