diff --git a/web/public/static/images/bg13.png b/web/public/static/images/bg13.png
deleted file mode 100644
index f208854c7..000000000
Binary files a/web/public/static/images/bg13.png and /dev/null differ
diff --git a/web/public/static/images/bg14.png b/web/public/static/images/bg14.png
deleted file mode 100644
index cbe4042c5..000000000
Binary files a/web/public/static/images/bg14.png and /dev/null differ
diff --git a/web/public/static/images/bg17.png b/web/public/static/images/bg17.png
deleted file mode 100644
index c2aa3344a..000000000
Binary files a/web/public/static/images/bg17.png and /dev/null differ
diff --git a/web/public/static/images/bg18.png b/web/public/static/images/bg18.png
deleted file mode 100644
index 78688afdd..000000000
Binary files a/web/public/static/images/bg18.png and /dev/null differ
diff --git a/web/src/views/login/index.vue b/web/src/views/login/index.vue
index e4f5ffe90..d02d76e3b 100644
--- a/web/src/views/login/index.vue
+++ b/web/src/views/login/index.vue
@@ -7,7 +7,7 @@
       width: 100%;
       height: 100vh;
       display: flex;
-      background-image: url(/static/images/bg19.png);
+      background-image: url(/static/images/bg19.webp);
       background-position: center center;
       background-repeat: no-repeat;
       background-size: cover;"