diff --git a/.github/workflows/scheduled_sync.yml b/.github/workflows/scheduled_sync.yml
index c22f245..48751f1 100644
--- a/.github/workflows/scheduled_sync.yml
+++ b/.github/workflows/scheduled_sync.yml
@@ -23,19 +23,19 @@ jobs:
           pip install -r requirements.txt
       - name: build pdf
         run: python main_async.py
-      - name: optimize pdf size
-        run: |
-          mkdir pdfsizeopt
-          cd pdfsizeopt
-          wget -O pdfsizeopt_libexec_linux.tar.gz https://github.com/pts/pdfsizeopt/releases/download/2023-04-18/pdfsizeopt_libexec_linux-v9.tar.gz
-          tar xzvf pdfsizeopt_libexec_linux.tar.gz
-          rm -f    pdfsizeopt_libexec_linux.tar.gz
-          wget -O pdfsizeopt.single https://raw.githubusercontent.com/pts/pdfsizeopt/master/pdfsizeopt.single
-          chmod +x pdfsizeopt.single
-          ln -s pdfsizeopt.single pdfsizeopt
-          cd ..
-          mv out/guide.pdf .
-          ./pdfsizeopt/pdfsizeopt guide.pdf out/guide.pdf
+      # - name: optimize pdf size
+      #   run: |
+      #     mkdir pdfsizeopt
+      #     cd pdfsizeopt
+      #     wget -O pdfsizeopt_libexec_linux.tar.gz https://github.com/pts/pdfsizeopt/releases/download/2023-04-18/pdfsizeopt_libexec_linux-v9.tar.gz
+      #     tar xzvf pdfsizeopt_libexec_linux.tar.gz
+      #     rm -f    pdfsizeopt_libexec_linux.tar.gz
+      #     wget -O pdfsizeopt.single https://raw.githubusercontent.com/pts/pdfsizeopt/master/pdfsizeopt.single
+      #     chmod +x pdfsizeopt.single
+      #     ln -s pdfsizeopt.single pdfsizeopt
+      #     cd ..
+      #     mv out/guide.pdf .
+      #     ./pdfsizeopt/pdfsizeopt guide.pdf out/guide.pdf
       - name: build redirect page
         run: cp resources/index.html out/index.html
       - name: upload