#099 · Color Filters & Effects Tool

Adjust Image Temperature

Warm or cool an image by shifting red and blue channels with a straightforward temperature control.

Image Tool

One image
warm
Ad space

How to use this image tool

  1. Select a supported image.
  2. Set the available options and review their limits.
  3. Choose Adjust temperature, inspect the result, then download the newly created file.

What this tool does

Positive values add warmth by increasing red and reducing blue; negative values cool the image with the opposite channel shift.

Warmth: red + shift, blue − shift; green remains stable

This is a visual RGB adjustment, not a camera RAW color-temperature conversion measured in Kelvin.

Supported formats

PNG, JPEG, and WebP inputs are supported. Output is PNG to avoid an additional lossy JPEG encode.

Inputimage/png,image/jpeg,image/webp
ProcessingLocal browser session
Safety limit40 megapixels per raster operation

Tips for better results

  • Use small changes first, especially on skin tones.
  • A negative value can calm orange indoor lighting.
  • Use the white balance tool when neutral correction is the goal.

FAQ

Is the temperature value measured in Kelvin?

No. It is a relative RGB warmth control, not a calibrated camera color-temperature setting.

What does a positive temperature adjustment do?

It increases red and reduces blue, creating a warmer appearance.

Can this fix every lighting color cast?

No. Mixed lighting and nonlinear casts may require selective editing or RAW controls.

Why is green not changed directly?

Holding green steady provides a simple warm-versus-cool shift with predictable behavior.

Does the adjustment preserve transparency?

Yes. The original alpha values are retained in the PNG output.

Processing details

PrivacyLocal processing
OutputNew downloadable Blob
ResetClears files and object URLs

Browse more image tools

Image tool hubs