diff --git a/main.js b/main.js
index 2c26d86..768e57d 100644
--- a/main.js
+++ b/main.js
@@ -102,9 +102,13 @@ async function postToBluesky(text, images) {
   }
   const richText = new RichText({ text: completetext });
   await richText.detectFacets(agent);
+  let text = richText.text;
+  if (richText.graphemeLength > 300) {
+    text = text.substr(0,299) + '…';
+  }
 
   return agent.post({
-    text: richText.text,
+    text: text,
     facets: richText.facets,
   });
 }