[图片写字](gd/%E5%9B%BE%E7%89%87%E5%86%99%E5%AD%97.md) [图片合并](gd/%E5%9B%BE%E7%89%87%E5%90%88%E5%B9%B6.md) [图像压缩](../%E5%9B%BE%E5%83%8F%E5%8E%8B%E7%BC%A9.md) [图片写字居中](gd/%E5%9B%BE%E7%89%87%E5%86%99%E5%AD%97%E5%B1%85%E4%B8%AD.md)