project slimming #1
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| name: Optimize images to ~200KB | |
| on: | |
| push: | |
| branches: [ main ] | |
| paths: | |
| - '**/*.png' | |
| - '**/*.jpg' | |
| - '**/*.jpeg' | |
| jobs: | |
| optimize: | |
| runs-on: ubuntu-latest | |
| steps: | |
| - uses: actions/checkout@v4 | |
| - name: Setup Node | |
| uses: actions/setup-node@v4 | |
| with: | |
| node-version: '20' | |
| - name: Install squoosh CLI | |
| run: npm i -g @squoosh/cli | |
| - name: Convert & compress images toward <=200KB | |
| shell: bash | |
| run: | | |
| set -e | |
| # 需要处理的文件（排除已经是 webp 的） | |
| mapfile -t FILES < <(git ls-files | grep -Ei '\.(jpg|jpeg|png)$') | |
| # 如果没有新图，直接退出 | |
| if [ ${#FILES[@]} -eq 0 ]; then | |
| echo "No images to optimize." | |
| exit 0 | |
| fi | |
| # 目标上限（字节） | |
| TARGET=200000 | |
| # 最大宽度（超过就等比缩小；自行调整，如 1600/1920） | |
| MAXW=1920 | |
| for f in "${FILES[@]}"; do | |
| echo "Processing: $f" | |
| # 临时输出名（先转 webp） | |
| out="${f%.*}.webp" | |
| # 先做一次“温和”压缩与缩放 | |
| npx @squoosh/cli --webp auto --resize "max_width=${MAXW}" -d /tmp "$f" >/dev/null 2>&1 || true | |
| cand="/tmp/${out##*/}" | |
| # 如果仍超 200KB，则逐步降低质量重试 | |
| if [ -f "$cand" ]; then | |
| size=$(stat -c%s "$cand" 2>/dev/null || stat -f%z "$cand") | |
| else | |
| size=999999999 | |
| fi | |
| if [ "$size" -gt "$TARGET" ]; then | |
| for q in 85 80 75 70 65 60; do | |
| npx @squoosh/cli --webp "quality=${q}" --resize "max_width=${MAXW}" -d /tmp "$f" >/dev/null 2>&1 || true | |
| cand="/tmp/${out##*/}" | |
| size=$(stat -c%s "$cand" 2>/dev/null || stat -f%z "$cand") | |
| echo " Try quality=$q -> ${size} bytes" | |
| [ "$size" -le "$TARGET" ] && break | |
| done | |
| fi | |
| # 用 webp 替换原图（也可以选择另存到 assets/img/optimized/） | |
| if [ -f "$cand" ]; then | |
| mv "$cand" "$out" | |
| git rm -f --quiet "$f" | |
| git add "$out" | |
| echo " -> Saved as $out" | |
| fi | |
| done | |
| - name: Commit optimized images | |
| uses: EndBug/add-and-commit@v9 | |
| with: | |
| message: "chore: optimize images to ~200KB (webp, resize, quality step-down)" | |
| add: "." |