Adjust
Tune brightness, contrast, saturation, and temperature.
How it works
- 1Drop an image.
- 2Move brightness, contrast, saturation, and temperature.
- 3Download the adjusted file.
About
Adjust photo tone in the browser. Four sliders — brightness, contrast, saturation, and temperature — update a live preview. Export applies the same math at full resolution. Nothing is uploaded.
This is a simple pixel matrix, not Lightroom. There are no curves, HSL wheels, RAW controls, or local masks.
Ranges: brightness −0.4 to 0.4, contrast 0.4 to 1.8, saturation 0 to 2, temperature −1 to 1. Lossy export uses quality 0.92. Caps: 32 megapixels, 50 MB.
Common use cases
- Brighten a dark phone photo
- Cool down a warm indoor shot
- Boost contrast on a scan
- Desaturate a screenshot for a mockup
What the sliders do
Brightness shifts all channels. Contrast pivots around mid-gray. Saturation mixes toward Rec.709 gray. Temperature pushes red vs blue.
They stack. A warm boost plus extra saturation will look punchier than temperature alone.
Honest quality
This will not match Capture One or Lightroom. It will not recover blown skies. It will not apply a camera profile.
JPEG export is a re-encode at quality 0.92. Keep the original if you still need to grade later.
When not to use this tool
Skip it for print color management, skin-tone work, or batch catalog grading. Use Invert & Grayscale if you only need a B&W or negative look.
Files above 32 megapixels or 50 MB are rejected.