Image Temperature Adjuster
Give photos the right warmth. Move one slider to warm up cold, bluish shots from shade or cloudy days, or to cool down orange photos taken under light bulbs. Auto white balance analyses the colours and neutralises the cast for you, and presets give quick golden-hour or crisp-daylight looks. The change is made in linear light and keeps the overall brightness.
- Files stay on your device
- No sign-up
- Free to use
Colour temperature
Warm removes the blue cast of shade and cloudy days; cool removes the orange cast of indoor light bulbs. Changes are made in linear light and keep the overall brightness.
Output
How to use Image Temperature Adjuster
- Drop one or more photos onto the page.
- Click Auto white balance or move the temperature slider.
- Try the presets for a stylised look.
- Download the corrected photos.
Image Temperature Adjuster features
One slider
From cool blue to warm orange.
Auto white balance
Grey-world correction of colour casts.
Presets
Golden hour and cool daylight.
Natural results
Linear-light gains, brightness kept.
Batch
Apply the same settings to up to 50 images.
Private
Processed in your browser; nothing is uploaded.
When to use Image Temperature Adjuster
- Correcting indoor photos under warm bulbs.
- Warming portraits taken in the shade.
- Matching the colour of photos from different cameras.
- Creating sunset or wintry moods.
Image Temperature Adjuster FAQ
What is colour temperature?
Light sources have a colour: candlelight and bulbs are orange (warm, around 2700 K), midday sun is neutral (about 5500 K), and shade and overcast sky are bluish (cool, 7000 K and more). Cameras try to compensate, but often not completely.
How does auto white balance work?
It assumes that the average colour of a scene is neutral grey (the grey-world assumption) and adjusts the balance between red and blue until it is. This works well for most everyday scenes.
When does auto white balance fail?
When a scene is dominated by one colour, such as a sunset, a forest or a red wall. The tool then removes colour that belongs to the scene; adjust by hand instead.
What about green or magenta casts?
Those are corrected with tint, the second axis of white balance. Use the Image Tint Adjuster.
Which formats can I use?
JPG, PNG, WebP, GIF (first frame), BMP and AVIF in; JPG, PNG or WebP out. PNG and WebP keep transparency; JPG gets a white background.
Are my photos uploaded?
No. The images are processed in your browser and never leave your device.
White balance and mood
White balance is the camera’s attempt to make white objects look white under any light. Our brain does this automatically – a sheet of paper looks white to us under a bulb and in the shade – but a camera records the actual colour of the light. When its automatic setting misjudges the scene, photos look too blue or too orange.
The temperature slider changes the balance between the red and blue channels. To keep the result natural, the tool works in linear light, where the channels represent physical light intensities, and normalises the gains so that the overall brightness stays the same. Skin tones keep their relationship to the background, and highlights do not shift unexpectedly.
Auto white balance measures the average red and blue in linear light and calculates the slider position that equalises them. The note under the buttons tells you whether a blue or orange cast was found. For scenes with a deliberate colour mood, the correction can be too strong, so you can always fine-tune it.
Temperature is also a creative tool. A slightly warm image feels friendly and summery, which is why many portrait and food photographers warm their images. A cool image feels calm, clean or cold – ideal for winter scenes, architecture and technology.
All adjustments are calculated in your browser.