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.
How to Use
- Paste any valid JSON, supports nesting, arrays and escapes
- Click Beautify to auto indent and format
- Click Minify to remove whitespace into one line
- All operations run locally for privacy
Related Tools
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.