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

  1. 上传图片
  2. 调整亮度(-100至+100)
  3. 调整对比度(0.2x至3.0x)
  4. 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.