diff --git a/CHANGELOG.md b/CHANGELOG.md
index e6e98881..9df660e0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## next
+
+- Use SVG icons for better visual effects (#637).
+
 ## 1.11.6 (Sep 17, 2023)
 
 - Fix an issue where some CSS styles were incompatible with old browsers (#611).
diff --git a/src/css/viewer.css b/src/css/viewer.css
index 4212562c..8731c80d 100644
--- a/src/css/viewer.css
+++ b/src/css/viewer.css
@@ -13,7 +13,7 @@
 .viewer-fullscreen-exit,
 .viewer-close {
   &::before {
-    background-image: url('../images/icons.png');
+    background-image: url('../images/icons.svg');
     background-repeat: no-repeat;
     background-size: 280px;
     color: transparent;
diff --git a/src/css/viewer.scss b/src/css/viewer.scss
index a7b6c621..91f39c63 100644
--- a/src/css/viewer.scss
+++ b/src/css/viewer.scss
@@ -14,7 +14,7 @@
   &-fullscreen-exit,
   &-close {
     &::before {
-      background-image: url('../images/icons.png');
+      background-image: url('../images/icons.svg');
       background-repeat: no-repeat;
       background-size: 280px;
       color: transparent;
diff --git a/src/images/icons.png b/src/images/icons.png
deleted file mode 100644
index 41d7027c..00000000
Binary files a/src/images/icons.png and /dev/null differ
diff --git a/src/images/icons.psd b/src/images/icons.psd
deleted file mode 100644
index e4242ed6..00000000
Binary files a/src/images/icons.psd and /dev/null differ
diff --git a/src/images/icons.svg b/src/images/icons.svg
new file mode 100644
index 00000000..83e19291
--- /dev/null
+++ b/src/images/icons.svg
@@ -0,0 +1 @@
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