diff --git a/.forgejo/workflows/size-report.yml b/.forgejo/workflows/size-report.yml
new file mode 100644
index 0000000..1bf2a41
--- /dev/null
+++ b/.forgejo/workflows/size-report.yml
@@ -0,0 +1,10 @@
+on:
+  pull_request:
+jobs:
+  report-size:
+    runs-on: nixos
+    steps:
+      - uses: "https://git.salame.cl/actions/checkout@v4"
+      - run: nix --version
+      - name: Report Size
+        run: ci-scripts/report-size.sh
diff --git a/ci-scripts/report-size.sh b/ci-scripts/report-size.sh
new file mode 100755
index 0000000..33295fd
--- /dev/null
+++ b/ci-scripts/report-size.sh
@@ -0,0 +1,18 @@
+create_table() {
+	# we want to split the words as each of them is a different installable
+	# shellcheck disable=SC2046
+	table=$(nix path-info --size --closure-size --human-readable \
+		$(nix flake show --json 2>/dev/null | jq --raw-output '.packages."x86_64-linux" | ".#" + keys[]') |
+		sed 's/^\(\S\+\)\(\s\+\)\(\S\+\)\(\s\+\)\(\S\+\)$/| \1\2| \3 | \4\5 |/')
+
+	cat <<-EOF
+		| Nix Store Path | NAR Size | Closure Size |
+		|----------------|---------:|-------------:|
+		$table
+	EOF
+}
+
+tea login --token "$GITHUB_TOKEN"
+tea pulls list
+
+create_table