Image Contrast Adjuster
对比度照片调整图片增强调色
Boost or reduce tonal contrast with a live slider to revive flat photos; instant preview and download, fully local.
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How to Use
- Upload or drop the image you want to adjust
- Drag the sliders to preview the effect in real time
- Export and save the adjusted image when satisfied
- Images are processed inside your browser only — never uploaded to any server
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FAQ
What if contrast is too high?
Highlights clip to pure white and shadows crush to black losing detail; keep within ±50 and preview live.
Contrast vs brightness?
Brightness shifts overall lightness while contrast widens the gap; combine both for best results.
Is my image uploaded?
No, everything runs locally in your browser.