diff --git a/src/modules/fedimbed.js b/src/modules/fedimbed.js
index b12983b..e03f660 100644
--- a/src/modules/fedimbed.js
+++ b/src/modules/fedimbed.js
@@ -454,9 +454,7 @@ async function processUrl(msg, url, spoiler = false) {
         headers: {
           "User-Agent": FRIENDLY_USERAGENT,
         },
-      })
-        .then((res) => res.blob())
-        .then((blob) => blob.size);
+      }).then((res) => Number(res.headers.get("Content-Length")));
 
       if (size <= getUploadLimit(msg.channel.guild)) {
         const file = await fetch(attachment.url, {
@@ -487,9 +485,7 @@ async function processUrl(msg, url, spoiler = false) {
         headers: {
           "User-Agent": FRIENDLY_USERAGENT,
         },
-      })
-        .then((res) => res.blob())
-        .then((blob) => blob.size);
+      }).then((res) => Number(res.headers.get("Content-Length")));
 
       if (size <= getUploadLimit(msg.channel.guild)) {
         const file = await fetch(attachment.url, {