Adjust Image Brightness, Contrast & Colors Online | ImagePlumber
Fine-tune brightness, contrast, saturation, temperature warmth, and sharpness online for free. 1-Click Auto-Enhance and split before/after comparison.
How It Works: Easy Step-by-Step Guide
- Upload Image: Select any image to adjust lighting and color balance.
- Adjust Sliders or Auto-Enhance: Fine-tune brightness, contrast, and saturation, or click 1-Click Auto-Enhance.
- Compare & Download: Inspect changes with Split View and export high-resolution graded photo.
Key Features & Processing Details
- Brightness, Contrast, Saturation, Exposure & Warmth sliders
- 1-Click Auto-Enhance histogram equalizer
- Interactive Before vs After Split View comparison
- 3x3 Convolution matrix unsharp mask sharpness filter
Frequently Asked Questions (FAQ)
What does the Auto-Enhance button do?
It analyzes the minimum, maximum, and average luminance distribution of your photo, then applies mathematical dynamic range stretching and contrast optimization.
How does sharpness enhancement work?
It computes a 3x3 unsharp masking convolution kernel that calculates local contrast gradients to enhance fine edges without creating color noise.
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