ToolJovia
Images

Image Color Adjuster

Apply explicit brightness, contrast, gamma and saturation changes to raster pixels.

✓ Browser-local processing

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How to use Image Color Adjuster

Apply explicit brightness, contrast, gamma and saturation changes to raster pixels. The operation order is contrast around midgray, brightness multiplication, inverse-gamma correction and luminance-based saturation. Alpha is retained and output is clamped.

  1. Provide the input and select the documented mode or options.
  2. Run the tool and review its result and any limits reported below.
  3. Copy the text result or download a separate output file.

Good to know

  • PNG, JPEG or WebP only;10MiB per image,24 megapixels and12,000 pixels per side. The browser applies supported EXIF orientation.
  • Raster export does not preserve animation, original color profiles or embedded metadata. Keep your original file.
  • Pixel adjustment is capped at8MP. This is a basic sRGB-channel effect, not a color-managed/HDR editor.
  • Processing happens in this browser tab. Inputs and results are not automatically saved or uploaded.

Common questions

What does Image Color Adjuster process?

The operation order is contrast around midgray, brightness multiplication, inverse-gamma correction and luminance-based saturation. Alpha is retained and output is clamped.

What happens to my original input?

The tool creates a separate result. Selected files and pasted data remain on this device; inspect the result before using it in another system.

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