PNG旋转

功能说明What It Does

PNG旋转工具支持顺时针 / 逆时针 90°、180° 与 0-359° 任意角度旋转。90° 与 270° 会交换宽高,任意角度自动计算包围盒尺寸,画面不会被裁切,透明通道完整保留。

This tool rotates images 90° clockwise/counter-clockwise, 180°, or any angle from 0-359°. Width and height swap at 90°/270°; arbitrary angles auto-size the canvas as a bounding box so nothing is cropped, and the alpha channel is preserved.

全部在浏览器本地完成,数据不会上传。

Everything runs locally in your browser - nothing is uploaded.

画布尺寸Canvas sizing

90° / 270° 旋转后画布宽高互换;180° 保持原尺寸;任意角度使用旋转包围盒,四角留白区域保持透明。

At 90°/270° the canvas width and height swap; at 180° it stays the same; arbitrary angles use the rotated bounding box, with the corner areas kept transparent.

使用步骤How to Use

1. 上传图片。Upload an image.
2. 点快捷旋转按钮,或拖滑块选任意角度后「应用角度」。Use the quick-rotate buttons, or drag the slider and click "Apply".
3. 满意后「导出PNG」。Click "Export PNG" when satisfied.

常见问题FAQ