Color Temperature

Colour temperature describes whether an image looks warm (reddish-orange, like candlelight or a sunset) or cool (bluish, like shade or an overcast sky). This tool shifts it with a single slider: to the right the image becomes warmer (more red, less blue), to the left cooler (more blue, less red).

Adjusting the colour temperature rescues shots with a wrong white balance (a too-blue shadow photo, too-orange artificial light) or deliberately sets a mood - golden hour or a cool evening scene. At temperature 0 the image is unchanged. The output keeps your original format and dimensions.

Everything runs entirely locally in your browser on a canvas (no upload, even offline) - your image never leaves your device. The shift moves the red and blue channels in opposite directions while the green channel is preserved. Animated images are flattened to a single frame.

Colour temperature is measured in kelvin - and, against everyday intuition: higher kelvin values (daylight, overcast sky) look cool and bluish, lower ones (candle, incandescent bulb) warm and orange. This control shifts exactly the blue-orange balance of the image, without touching the actual image content or the sharpness.

Specifications

In 3 steps

1. Drop or tap your image (PNG, JPEG or WebP).
2. Choose the temperature (negative cooler, positive warmer; 0 unchanged).
3. Download the adjusted image (several at once as a ZIP).

Limitations: Shifts the colour temperature via a slider (-100 to 100): positive warmer (red up, blue down), negative cooler (reversed), 0 unchanged. The green channel is preserved. The original format and dimensions are preserved (PNG keeps transparency; JPEG flattens onto white). Animated inputs are reduced to a single frame.

FAQ

Related tools

Brightness and Contrast · Saturate Image · Rotate Hue · Vignette Image