Algorithm guide

Clustered Dot Dithering Online

Updated June 2026 · 5 min read

Clustered dot dithering online recreates classic newspaper halftone printing with an ordered 6×6 threshold matrix — dots cluster in bright areas and shrink in shadows. Diffused Editor includes Clustered Dot (Newspaper) free in the browser.

What is clustered dot dithering?

Clustered dot halftone places dots that grow from a central cluster point as tone darkens — mimicking analog newspaper and offset printing. Diffused Editor uses a 6×6 clustered-dot threshold matrix applied before color quantization, producing regular, print-authentic dot patterns.

Clustered Dot vs Diffusion Dots vs Bayer

• Clustered Dot — ordered matrix, newspaper-style clustered halftone (this guide)
• Diffusion Dots — error diffusion + circular dots, magazine/comic feel
• Ordered Bayer — 8×8 geometric grid, pop-art crosshatch

How to apply clustered dot dithering online

1. Open Diffused Editor.
2. Upload your image and select Clustered Dot (Newspaper).
3. Try grayscale + 2 colors for classic B&W newsprint, or 4–8 colors for retro CMYK feel.
4. Increase contrast +10 to +20 for punchier halftone separation.

Print workflow tips: dithering for print online.

Frequently asked questions

What is clustered dot dithering?

Clustered dot dithering uses an ordered threshold matrix where halftone dots grow from cluster centers — mimicking traditional newspaper printing plates.

Is clustered dot the same as Diffusion Dots?

No. Clustered Dot is pure ordered dithering with a fixed matrix. Diffusion Dots combines error diffusion with circular dot shapes for a different halftone character.

Can I use clustered dot dithering online for free?

Yes. Clustered Dot (Newspaper) is included in Diffused Editor's free tier.