亮度和对比度调整
使用精确控制调整图片亮度和对比度。
Drop your image here
or click to browse · max 50 MB
Settings
6
Fast (larger)Best (smaller)
0
DarkerNormalBrighter
1.00x
LowNormalHigh
wasm-vips (~5MB) will be downloaded on first use and cached by your browser.
亮度和对比度调整
调整图片亮度和对比度级别。亮度移动所有像素值,对比度调整明暗区域之间的差异。
用途
- 校正曝光不足或过度的照片
- 改善平淡图片的对比度
- 准备打印用图片
使用步骤
- 上传图片
- 调整亮度(-100至+100)
- 调整对比度(0.2x至3.0x)
- 点击转换
工作原理
上传图片并调整滑块。点击转换应用。
技巧与最佳实践
- 先调对比度,再微调亮度
- 对比度1.0x = 无变化
常见问题
可以重置为默认值吗?
是的,点击「重置为默认值」。
Privacy & Security
This tool uses wasm-vips (libvips compiled to WebAssembly). The WASM binary (~5MB) is downloaded on first use and cached by your browser. All image processing happens locally on your device - your images are never uploaded to any server. This makes it safe for sensitive, private, or confidential images.