diff --git a/.github/workflows/format.yml b/.github/workflows/format.yml
new file mode 100644
index 00000000..95d6f6b8
--- /dev/null
+++ b/.github/workflows/format.yml
@@ -0,0 +1,30 @@
+
+
+name: format
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+  format:
+    name: format
+    strategy:
+      matrix:
+        ocaml-compiler:
+            - '5.3'
+    runs-on: 'ubuntu-latest'
+    steps:
+      - uses: actions/checkout@main
+      - name: Use OCaml ${{ matrix.ocaml-compiler }}
+        uses: ocaml/setup-ocaml@v3
+        with:
+          ocaml-compiler: ${{ matrix.ocaml-compiler }}
+          dune-cache: true
+          allow-prerelease-opam: true
+
+      - run: opam install ocamlformat.0.27.0
+      - run: opam exec -- make format-check
+
diff --git a/.github/workflows/gh-pages.yml b/.github/workflows/gh-pages.yml
deleted file mode 100644
index bd08bcac..00000000
--- a/.github/workflows/gh-pages.yml
+++ /dev/null
@@ -1,38 +0,0 @@
-name: github pages
-
-on:
-  push:
-    branches:
-      - main
-
-jobs:
-  deploy:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@main
-
-      # needed for depext to work
-      - run: sudo apt-get update && sudo apt-get install mccs
-
-      - uses: ocaml/setup-ocaml@v3
-        with:
-          ocaml-compiler: '5.1.x'
-          dune-cache: true
-          allow-prerelease-opam: true
-
-      - run: |
-          opam pin trace https://github.com/ocaml-tracing/ocaml-trace.git#main -y -n
-          opam pin https://github.com/ocaml-tracing/ambient-context.git#main -y -n
-
-      - name: Deps
-        run: opam install odig opentelemetry opentelemetry-lwt opentelemetry-client-ocurl opentelemetry-cohttp-lwt
-
-      - name: Build
-        run: opam exec -- odig odoc --cache-dir=_doc/ opentelemetry opentelemetry-lwt opentelemetry-client-ocurl opentelemetry-cohttp-lwt
-
-      - name: Deploy
-        uses: peaceiris/actions-gh-pages@v3
-        with:
-          github_token: ${{ secrets.GITHUB_TOKEN }}
-          publish_dir: ./_doc/html
-          enable_jekyll: false
diff --git a/Makefile b/Makefile
index b4d41f61..0ae04b40 100644
--- a/Makefile
+++ b/Makefile
@@ -26,6 +26,9 @@ odig-doc:
 format:
 	@dune build @fmt --auto-promote
 
+format-check:
+	@dune build $(DUNE_OPTS) @fmt --display=quiet
+
 WATCH ?= @all
 watch:
 	@dune build $(WATCH) -w $(OPTS)