diff --git a/.github/workflows/make-coverage-html.yml b/.github/workflows/make-coverage-html.yml
new file mode 100644
index 00000000..4c0a4107
--- /dev/null
+++ b/.github/workflows/make-coverage-html.yml
@@ -0,0 +1,57 @@
+# yamllint disable rule:line-length
+# This workflow runs make coverage/html and verifies that the coverage HTML report is generated.
+# yamllint enable rule:line-length
+
+---
+name: Make Coverage HTML
+
+env:
+  REPORT_DIR: "coverage/lcov-report"
+  REPORT_FILE: "index.html"
+
+on: # yamllint disable-line rule:truthy
+  push:
+    branches: ["main"]
+  pull_request:
+    branches: ["main"]
+  workflow_dispatch:
+
+jobs:
+  make-coverage-html:
+    name: "Run make coverage/html and verify coverage HTML"
+    runs-on: ubuntu-24.04
+
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+      - name: Set up Node.js
+        uses: actions/setup-node@v6
+        with:
+          node-version: 24.x
+
+      - name: Tool test
+        run: |
+          echo "Node.js version:"
+          node --version
+          echo "GNU make version:"
+          make --version
+
+      - name: Run coverage HTML target
+        run: make coverage/html
+
+      - name: Verify coverage HTML artifact
+        shell: bash
+        run: |
+          if [ ! -f $REPORT_DIR/$REPORT_FILE ]; then
+            echo "Coverage HTML file not found: $REPORT_DIR/$REPORT_FILE"
+            exit 1
+          fi
+          if [ ! -s $REPORT_DIR/$REPORT_FILE ]; then
+            echo "Coverage HTML file is empty: $REPORT_DIR/$REPORT_FILE"
+            exit 1
+          fi
+
+      - name: Upload coverage HTML artifact
+        uses: actions/upload-artifact@v7
+        with:
+          name: coverage-report-html
+          path: ${{ env.REPORT_DIR }}
diff --git a/.github/workflows/node-coverage.js.yml b/.github/workflows/node-coverage.js.yml
index f41f8b43..e02dc953 100644
--- a/.github/workflows/node-coverage.js.yml
+++ b/.github/workflows/node-coverage.js.yml
@@ -24,21 +24,26 @@ jobs:
         with:
           node-version: 24.x
 
-      - name: Install dependencies
-        run: npm ci --verbose
+      - name: Tool test
+        run: |
+          echo "Node.js version:"
+          node --version
+          echo "GNU make version:"
+          make --version
 
-      - name: Lint
-        run: npm run lint
+      - name: Install dependencies
+        run: make dependencies
 
-      - name: Run the tests
-        run: npm run jest:ci -- --coverage
+      - name: Run the tests with coverage
+        run: make coverage
 
       # Subir cobertura como artifact para que otros jobs lo usen
       - name: Upload coverage artifact
         uses: actions/upload-artifact@v7
+
         with:
           name: coverage-report
-          path: coverage # o la carpeta donde jest genera los reportes
+          path: coverage
 
 
   codecov:
diff --git a/Makefile b/Makefile
index d845e45f..8c6d88d7 100644
--- a/Makefile
+++ b/Makefile
@@ -94,7 +94,13 @@ test: env dependencies
 coverage: test
 
 coverage/html: coverage
-	open coverage/lcov-report/index.html
+	@if [ "$$(uname)" = "Darwin" ]; then \
+		open ./coverage/lcov-report/index.htmll; \
+	elif [ "$$(uname | tr '[:upper:]' '[:lower:]')" = "mingw32" ] || [ "$$(uname | tr '[:upper:]' '[:lower:]')" = "mingw64" ] || [ "$$(uname | tr '[:upper:]' '[:lower:]')" = "cygwin" ]; then \
+		cmd /c start ./coverage/lcov-report/index.htmll; \
+	else \
+		echo "Coverage HTML generated: ./coverage/lcov-report/index.htmll"; \
+	fi
 
 outdated:
 	-npm outdated