diff --git a/Cargo.toml b/Cargo.toml
index 9ae1d96..9c1c870 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,6 +9,9 @@ edition = "2018"
 [lib]
 crate-type = ["cdylib"]
 
+[profile.release]
+lto = true
+
 [badges]
 travis-ci = { repository = "cecton/yewprint", branch = "main" }
 is-it-maintained-issue-resolution = { repository = "cecton/yewprint" }
diff --git a/build.sh b/build.sh
index 685956e..19134cd 100755
--- a/build.sh
+++ b/build.sh
@@ -29,4 +29,6 @@ rc=$?
 
 rm -fR public/{.gitignore,package.json,README.md}
 
+echo Wasm size: $(cat public/*.wasm | wc -c)
+
 exit $rc