diff --git a/src/components/post/PostContent.tsx b/src/components/post/PostContent.tsx
index 6ce128e2..9e62c495 100644
--- a/src/components/post/PostContent.tsx
+++ b/src/components/post/PostContent.tsx
@@ -31,7 +31,7 @@ function optimizeImagesFromPost(markdown: string) {
   if (!matches) return markdown;
   const replacers = matches.map(match => [
     match,
-    match.replace('https://images.', 'https://img.').replace(/\)$/, '?w=1024)'),
+    match.replace('https://images.velog.io', 'https://media.vlpt.us'),
   ]);
   return replacers.reduce((acc, [original, optimized]) => {
     return acc.replace(original, optimized);
diff --git a/src/lib/optimizeImage.ts b/src/lib/optimizeImage.ts
index d5d9118f..6350a17a 100644
--- a/src/lib/optimizeImage.ts
+++ b/src/lib/optimizeImage.ts
@@ -1,4 +1,9 @@
-export default function optimizeImage(url: string, width: number) {
+export default function optimizeImage(url: string, width?: number) {
   if (!url.includes('https://images.velog.io')) return url;
-  return url.replace('://images', '://img').concat(`?w=${width}`);
+
+  let replaced = url.replace('://images.velog.io', '://media.vlpt.us');
+  if (!width) {
+    return replaced;
+  }
+  return replaced.concat(`?w=${width}`);
 }