How to Convert a Photo to Line Art

Why the source photo decides the result

Line art keeps edges and discards tone. Anything in the photo that produces an edge — a fence, foliage, a patterned shirt, a busy crowd — becomes a line, whether or not it has anything to do with your subject. That is why a technically sharp photo can still convert badly: there is simply more in it than the drawing can usefully carry.

What makes a photo suitable

Four things matter more than camera quality:

• One clear subject. A portrait or a single animal gives the line a single thing to describe.
• Separation from the background. The clearer the gap between subject and background, the cleaner the edge the line can follow.
• Even lighting. Harsh shadows create hard edges of their own, which the line will faithfully reproduce.
• Reasonable size. At least 500×500 pixels. Files up to 10MB are accepted; JPEG, PNG, WebP, and AVIF all work.

Getting the framing right

Crop loosely but deliberately. A head-and-shoulders crop usually reads better than a full-body shot, because the face is where the likeness lives and the line can spend its length there. Leave a little space around the subject so the drawing is not pressed against the edge of the frame.

If you have two or more people, keep them close together and facing roughly the same direction, so the line can travel from one to the next in one continuous stroke rather than jumping across empty space.

What to avoid

Avoid photos where the subject is small in the frame, where a busy pattern sits directly behind them, or where the face is half in shadow. Avoid heavy filters too — a strongly stylised photo has already lost the clean edges that make a good line drawing, and adding another layer of processing on top rarely recovers them.

Retouching worth doing first

You do not need editing software, but two small changes help if you have it. Removing or blurring a distracting background gives the line less to work with, and correcting the exposure so the face is evenly lit avoids edges created by shadow rather than by form.

If the result is not right

The most common cause is a photo with too much in it. Try a shot with a plainer background, or crop in closer so the subject fills more of the frame. The second most common cause is lighting: a photo with strong shadow across the face will produce a line that follows the shadow rather than the face.

It is worth generating more than one option before ordering. Line art is a reduction, and seeing two different sources side by side makes it obvious which one describes the subject more clearly. The gallery shows what finished drawings look like across a range of subjects.

What you can do with the result

A finished drawing works as wall art in either of two ways: as a physical print shipped to you, or as an STL file you print yourself. The same line serves both, which is one of the practical advantages of the style — there is no fine detail to lose at either size.