lt
60 lines
2.1 KiB
Python
60 lines
2.1 KiB
Python
#!/usr/bin/env python3
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"""
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压缩公众号配图
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目标：每张PNG < 80KB，保持清晰度
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"""
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import os
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from PIL import Image
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IMAGES_DIR = "/root/.openclaw/workspaces/yzr-yxl/projects/yu-zhi-ran/content/publishing/images"
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OUTPUT_DIR = "/root/.openclaw/workspaces/yzr-yxl/projects/yu-zhi-ran/content/publishing/images_compressed"
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os.makedirs(OUTPUT_DIR, exist_ok=True)
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def compress_png(input_path, output_path, target_kb=80):
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img = Image.open(input_path)
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# 如果图片较大，适当缩小（保持长宽比）
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max_width = 1200
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if img.width > max_width:
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ratio = max_width / img.width
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new_size = (max_width, int(img.height * ratio))
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img = img.resize(new_size, Image.Resampling.LANCZOS)
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print(f" 缩放: {img.width}x{img.height}")
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# 尝试不同压缩级别保存
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for optimize in [True, False]:
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for quality in [85, 80, 75, 70]:
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img.save(output_path, format='PNG', optimize=optimize, compress_level=6, quality=quality)
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size_kb = os.path.getsize(output_path) / 1024
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if size_kb <= target_kb:
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return size_kb, quality, optimize
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# 如果还是大，强制用最高压缩
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img.save(output_path, format='PNG', optimize=True, compress_level=9)
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return os.path.getsize(output_path) / 1024, 9, True
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if __name__ == "__main__":
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files = sorted([f for f in os.listdir(IMAGES_DIR) if f.endswith('.png')])
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print(f"开始压缩 {len(files)} 张图片...\n")
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total_before = 0
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total_after = 0
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for f in files:
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inp = os.path.join(IMAGES_DIR, f)
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out = os.path.join(OUTPUT_DIR, f)
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size_before = os.path.getsize(inp) / 1024
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total_before += size_before
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size_after, quality, opt = compress_png(inp, out)
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total_after += size_after
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status = "✅" if size_after <= 80 else "⚠️"
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print(f"{status} {f}")
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print(f" {size_before:5.1f}KB → {size_after:5.1f}KB (q={quality}, opt={opt})")
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print(f"\n总计: {total_before:.1f}KB → {total_after:.1f}KB")
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print(f"压缩率: {(1-total_after/total_before)*100:.1f}%")
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print(f"\n压缩文件已保存至: {OUTPUT_DIR}")
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