diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index e7a9de9..e3cac65 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -37,12 +37,15 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
+      - name: Install dependencies
+        run: |
+          sudo apt-get install pngquant
+
       - name: Setup Hugo
         run: |
           wget -O ${{ runner.temp }}/hugo.deb https://github.com/gohugoio/hugo/releases/download/v${HUGO_VERSION}/hugo_extended_${HUGO_VERSION}_linux-amd64.deb \
           && sudo dpkg -i ${{ runner.temp }}/hugo.deb
 
-
       - name: Build with Hugo
         env:
           # For maximum backward compatibility with Hugo modules
@@ -53,6 +56,9 @@ jobs:
             --gc --minify \
             --baseURL "https://docs.pactus.com/"
 
+      - name: Optimizing PNG images
+        run: find "./public" -type f -name "*.png" -exec pngquant --verbose --force --ext .png {} \;
+
       - name: Upload artifact
         uses: actions/upload-pages-artifact@v3
         with: