diff --git a/action.yml b/action.yml
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--- /dev/null
+++ b/action.yml
@@ -0,0 +1,14 @@
+name: LaTeX formatting
+description: Format all latex files
+author: Janis Hutz
+inputs:
+  workdir:
+    description: Directory to format in
+runs:
+  using: docker
+  image: git.janishutz.com/registry/latex-format:latest
+  args:
+    - ${{ inputs.workdir }}
+branding:
+  icon: book
+  color: red