Using weighted optimization

Weighted optimization lets you smoothly vary optimization settings across an image using masks from text layers, shape layers, and alpha channels. This technique produces higher-quality results in critical image areas without sacrificing file size. With weighted optimization, you can produce gradual variations in GIF, PNG-8, and WBMP dithering, lossy GIF settings, and JPEG compression. Weighted optimization also lets you favor colors in selected image areas when you generate a color table.


Image without weighted optimization (left), and with weighted optimization on text layers and vector shapes (right)

Related Subtopics:

About masks and weighted optimization
Using masks to modify JPEG quality
Using masks to modify GIF lossiness
Using masks to modify dithering
Using masks to modify color reduction

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