图片裁剪器 (PNG/JPEG/WebP, 本地)
拖拽选区、调整比例和质量，导出 PNG/JPEG/WebP，全程本地处理。
上传图片即可裁剪、旋转、调整比例并导出，全部在浏览器本地完成。
快速裁剪图片，无需上传服务器。支持 1:1、4:5、16:9、9:16 等常用比例，旋转和缩放后直接导出 PNG/JPEG/WebP。适合社交媒体、简历、演示封面等场景。
页面质量说明
- 步骤与说明会和当前工具行为一起核对。
- 浏览器限制、文件大小或兼容性差异会在相关位置标明。
- 除非页面明确说明，否则文件和文本优先在本地浏览器中处理。
社交与职场常用尺寸
- 1:1 头像 / 证件照
- 4:5 Instagram 竖图
- 16:9 视频封面/演示封面
- 9:16 Reels/故事/短视频
核心功能
- 常用比例一键切换: 1:1 头像、4:5 社交、16:9 封面、9:16 竖屏故事，随时切换。
- 旋转与质量调节: 支持旋转、缩放和质量滑杆，平衡清晰度和文件体积。
- 不上传原图: 基于 Canvas 的本地处理，适合隐私图片或敏感文件。
常见问题
会把图片上传到服务器吗？
不会。所有裁剪和导出都在浏览器本地完成。
应该选哪种格式？
PNG 适合文字/线稿，JPEG 适合照片（可调质量），WebP 兼顾质量与体积。
裁剪后会降质吗？
只会按你的设置重新编码。选择较高质量可保持清晰，或降低质量压缩体积。
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