Solarize Images Online Apply a solarization effect by inverting tones above an adjustable threshold.

What Is Image Solarize?

Solarization (the Sabattier effect) partially inverts an image by flipping tones above a threshold while leaving those below unchanged, creating a surreal, ethereal look.

Why Use Image Solarize?

• Adjustable threshold for precise control
• Recreates classic darkroom Sabattier effect digitally
• Creates surreal artistic images
• Simple per-pixel operation for instant processing

Common Use Cases

Artistic Photography

Create surreal images with partial tone inversion.

Album Art

Generate striking visuals for music covers.

Creative Design

Produce unique textures and effects.

Experimental Art

Explore digital darkroom techniques.

Technical Guide

For each channel: if value > threshold, output = 255 - value; otherwise unchanged. At threshold 128, the classic solarization look is achieved.

Tips & Best Practices

• 1
  Threshold 128 produces the classic solarization effect
• 2
  Low thresholds create near-complete inversion
• 3
  High thresholds only affect the brightest highlights
• 4
  Try solarizing after grayscale conversion for dramatic mono effect

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Frequently Asked Questions

Q What is solarization?

An effect that inverts tones above a threshold, creating surreal tonal relationships.

Q What threshold should I use?

128 is classic. Experiment to find the best look.

Q Is this the same as full inversion?

No — inversion flips all tones. Solarization only inverts above the threshold.

Q What is the Sabattier effect?

A darkroom technique of briefly exposing film during development.

About This Tool

Image Solarize is a free online tool by FreeToolkit.ai. All processing happens directly in your browser — your data never leaves your device. No registration or installation required.