diff --git a/packages/firefish-js/README.md b/packages/firefish-js/README.md
index d01395de20..2865a14e09 100644
--- a/packages/firefish-js/README.md
+++ b/packages/firefish-js/README.md
@@ -2,6 +2,8 @@
 
 ## Firefish SDK for Node.js, Bun, and browsers
 
+<img alt="npm" src="https://img.shields.io/npm/dm/firefish-js?logo=npm&color=%23CB0000"> <a href="https://pkg-size.dev/firefish-js"><img src="https://pkg-size.dev/badge/install/514440" title="Install size for firefish-js"></a> <a href="https://pkg-size.dev/firefish-js"><img src="https://pkg-size.dev/badge/bundle/21953" title="Bundle size for firefish-js"></a>
+
 Fork of [misskey-js](https://www.npmjs.com/package/misskey-js)
 
 <https://www.npmjs.com/package/firefish-js>