diff --git a/.clang-format b/.clang-format
index 6baed5c..61fbcf4 100644
--- a/.clang-format
+++ b/.clang-format
@@ -1,6 +1,5 @@
 ---
 IndentWidth: 4
-Language: Cpp
 Standard: Latest
 UseCRLF: false
 UseTab: Never
diff --git a/.github/workflows/bench.yml b/.github/workflows/bench.yml
index d6acd93..2ca54c5 100644
--- a/.github/workflows/bench.yml
+++ b/.github/workflows/bench.yml
@@ -4,11 +4,11 @@ on:
   workflow_dispatch:
 
 permissions:
-  contents: read
+  contents: write
 
 concurrency:
-  group: ${{ github.workflow }}-${{ github.ref }}
-  cancel-in-progress: true
+  group: benchmark-pages
+  cancel-in-progress: false
 
 jobs:
   linux:
@@ -119,3 +119,67 @@ jobs:
             benchmarks/bench_IsPrime.jpg
             benchmarks/bench_IsPrimeNoTable.jpg
             benchmarks/bench_summary.jpg
+
+  publish-pages:
+    name: Publish benchmark results to GitHub Pages
+    runs-on: ubuntu-latest
+    needs: [linux, windows]
+    steps:
+      - name: Download benchmark artifacts
+        uses: actions/download-artifact@v4
+        with:
+          path: artifacts
+          pattern: benchmark-*
+
+      - name: Prepare Pages content
+        shell: bash
+        run: |
+          set -euo pipefail
+          RUN_ID="${GITHUB_RUN_ID}"
+          OUT_DIR="site/benchmarks/runs/${RUN_ID}"
+
+          mkdir -p "${OUT_DIR}"
+
+          # Keep artifact directories separated to avoid collisions.
+          for d in artifacts/*; do
+            if [ -d "$d" ]; then
+              name="$(basename "$d")"
+              mkdir -p "${OUT_DIR}/${name}"
+              cp -R "$d"/* "${OUT_DIR}/${name}"/ || true
+            fi
+          done
+
+          # No Jekyll processing (serve files as-is)
+          touch site/.nojekyll
+
+          # Write pointer to the latest run.
+          python3 - <<'PY'
+          import json, os
+          repo = os.environ.get('GITHUB_REPOSITORY', '')
+          run_id = int(os.environ.get('GITHUB_RUN_ID', '0'))
+          run_url = f"https://github.com/{repo}/actions/runs/{run_id}" if repo and run_id else None
+          artifacts_dir = 'artifacts'
+          artifacts = []
+          if os.path.isdir(artifacts_dir):
+              for name in sorted(os.listdir(artifacts_dir)):
+                  full = os.path.join(artifacts_dir, name)
+                  if os.path.isdir(full) and name.startswith('benchmark-'):
+                      artifacts.append(name)
+          data = {
+              'runId': run_id,
+              'runUrl': run_url,
+              'artifacts': artifacts,
+          }
+          os.makedirs('site/benchmarks', exist_ok=True)
+          with open('site/benchmarks/latest.json', 'w', encoding='utf-8') as f:
+              json.dump(data, f, ensure_ascii=False, indent=2)
+          PY
+
+      - name: Deploy to gh-pages
+        uses: peaceiris/actions-gh-pages@v4
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_branch: gh-pages
+          publish_dir: site
+          keep_files: true
+          commit_message: "chore(bench): publish run ${{ github.run_id }}"
diff --git a/README.md b/README.md
index 431c0b8..9dc6948 100644
--- a/README.md
+++ b/README.md
@@ -100,11 +100,6 @@ The benchmark is run on GitHub Actions' Linux with gcc with -O3 optimization ena
 
 You can find more detailed benchmark results by clicking [here](https://github.com/Rac75116/libcpprime/actions/workflows/bench.yml?query=branch%3Amain+is%3Acompleted).
 
-
-![bench_IsPrime](bench_results/bench_IsPrime.jpg)
-![bench_IsPrimeNoTable](bench_results/bench_IsPrimeNoTable.jpg)
-![bench_summary](bench_results/bench_summary.jpg)
-
 # Releases
 
 -   2025/12/21 ver 1.3.0
diff --git a/bench_results/bench_IsPrime.jpg b/bench_results/bench_IsPrime.jpg
deleted file mode 100644
index aedc262..0000000
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diff --git a/bench_results/bench_IsPrimeNoTable.jpg b/bench_results/bench_IsPrimeNoTable.jpg
deleted file mode 100644
index 922c1ac..0000000
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diff --git a/bench_results/bench_summary.jpg b/bench_results/bench_summary.jpg
deleted file mode 100644
index 8526a28..0000000
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