check-images.yaml

name: check-image-size
on: 
 - pull_request
jobs:
  check-image-size:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with: 
          fetch-depth: 0
      - shell: bash
        run: |
          files=$(git diff --name-only origin/${{ github.base_ref }} | grep -E '.+\.png$' | xargs du -h --threshold=1M | cut -f2)
          for file in $files; do
            echo "::warning title=Big image,file=$file::This image is bigger than 1MB. Consider reducing its pixel size to match the actual size on the website, or use pngcrush or similar to maximize the compression"
          done
          if ! [[ -z "$files" ]]; then
          echo "::setFailed::"
          fi