Halftone Effect: What It Is and How to Make One Online (2026 Guide)

Everything about the halftone effect: how halftone printing works, mono vs colour vs CMYK halftones, dot shapes and angles, and how to make a halftone image online in minutes.

Look closely at an old comic, a newspaper photo or a vintage poster and you'll see it: a grid of tiny dots that, from a normal distance, blends into smooth shades. That's a halftone.

It's one of the most recognisable print effects ever made, and it's having a big comeback in posters, album covers and social graphics.

This guide covers how halftone works, the different types, and how to make a halftone effect online.

What is a halftone?

A printing press can't print grey. It can only put ink down or not. Halftone solves that by breaking an image into dots of varying size:

Big dots close together read as dark.
Small dots far apart read as light.

Your eye averages them out into tone. Halftone printing became common in the late 1800s and is how photos made it into newspapers and magazines for over a century.

The key settings

Frequency (LPI)

Lines per inch, or how dense the dot grid is.

Low (10–40 LPI): big, visible dots. Pop-art and poster look.
Medium (65–85 LPI): classic newsprint.
High (133–175 LPI): magazine quality, dots almost invisible.

For a stylised look, go low.

Angle

The rotation of the dot grid. 45° is the classic for single-colour work because the eye notices the pattern least at that angle.

Dot shape

Round: soft, classic.
Square: harder, more graphic.
Line: looks like an engraving or a screen print.
Ellipse: smoother transitions in mid-tones.

Types of halftone

Mono halftone

One ink, one screen. Black dots on white, or any single colour on paper. Great for gig posters and bold editorial images.

Colour halftone

Dots carry the original colours. Fun and pop-y, but less like real print.

CMYK halftone

The real thing. Cyan, magenta, yellow and black each get their own screen at a different angle (traditionally around 15°, 75°, 0° and 45°). Where the dots overlap you get those little rosette patterns you see in comics.

How to make a halftone effect online

In Bitgrain:

Open the editor and drop in your image.
Pick Halftone and choose mono, colour or CMYK.
Set a low frequency for a bold look, or higher for subtle texture.
Try round, square and line dots.
Push contrast before the halftone. Halftones love strong contrast.
Export as PNG, or SVG if you want vector dots.

CMYK mode outputs real four-channel separations, so you can actually send it to print.

Tips for better halftones

Boost contrast first. Flat images make muddy dots.
Simplify the background. Busy backgrounds turn into noise.
Use paper colour. A warm off-white behind black dots looks far more printed than pure white.
Stack effects. Add a little grain or a paper texture on top.
Mind the size. Dots that look great on a phone can disappear on a large print, and the reverse.

Halftone vs dithering

Both turn tone into patterns, but differently:

Halftone uses a regular grid of dots that change size.
Dithering uses same-sized pixels arranged in patterns or noise.

Halftone feels like print. Dithering feels like early computers. Both live in Bitgrain if you want to compare them on the same image.

Where halftone works well

Gig and event posters
Album and single covers
Comic-style portraits
Merch and t-shirt graphics (especially for screen printing)
Editorial images and zines

Final thoughts

Halftone is simple to understand but has a lot of range. A few changes to frequency, angle and dot shape can take the same photo from subtle newsprint to loud pop art.

Try it on one of your photos in Bitgrain and flip between mono and CMYK to see the difference.