What a digital brush is made of

A brush in Photoshop, Krita, Clip Studio, or a browser editor is an engine: it places shape stamps along the pen path. The icon is one frame of that program. Until spacing and stamp shape make sense, jitter and texture feel like magic.

A graphics tablet and stylus

Stamp shape

The base stamp may be a circle, texture, hard edge, or photo of a stroke. It sets soft vs jagged edges. Pencil uses a slightly irregular ellipse; chalk uses porous texture at low opacity. Stamp size often follows pressure—that ties to line stabilization and pressure.

Spacing between stamps

Spacing is the distance between stamp centers as a percent of brush size. At 25%, a 100 px brush places a stamp every 25 px. Lower spacing means denser fill and more CPU load. Higher spacing shows dots and a stamp effect. Pencil often lives at 1–8%, soft paint at 10–25%, spray imitation at 50% and up.

Jitter and scattering

Jitter randomly shifts each stamp off the ideal path. Scattering spreads stamps around the cursor. Together they add life; without them digital lines look sterile.

A designer's tools

Random offset

Position jitter moves stamps on X and Y by a few pixels. Size jitter changes scale stroke to stroke. Angle jitter rotates texture. For pencil, 2–5% position and light size jitter is enough. For grass or fur, raise scattering so one pass gives a bundle of strokes, not one line.

When scattering is useful

Use scattering when one stroke should mimic many particles: snow, splatter, foliage. Count is how many stamps per dab. Too high a count with low spacing kills performance. Rule: set spacing first, then jitter, scattering last.

Texture and dual brush

Texture overlays paper or canvas grain on each stamp. Dual brush combines two shapes so one cuts the other for complex edges without manual cleanup.

Grain overlay

Texture depth controls how much paper shows through the stroke. At 20–40% the art stops looking plastic without turning muddy. Pick texture resolution that matches stamp size or zoom will show repeating tiles.

Do not overload the CPU

Each effect layer—dual brush, texture, wet edges—multiplies work. On a 6000×6000 px canvas, texture plus dual brush can lag even on a strong PC. Test presets at your real file size, not a tiny sketch.

Common mistake

People copy a .abr or .brushset and wonder why it lags. Often spacing is 1% plus texture at 100% on a huge stamp. Bump spacing by 5–10 points—the brush often still looks good and lag disappears.

Three ready-made presets

You do not have to build from zero—knowing which sliders matter for each job is enough.

Pencil

Round or slightly elongated stamp, spacing 2–4%, hardness 85–95%, opacity from pressure, size jitter 3–5%, texture depth 15–25% with medium paper. Low stabilization keeps the line alive. Build from scratch:

  1. duplicate the default round brush;
  2. spacing 3%, size jitter 4%, texture depth 20%;
  3. draw a test line and raise hardness if the edge is too soft.

Soft oil

Soft circle, spacing 15–22%, flow below opacity, multiply or normal blend at low opacity. Light hue color jitter at 2–3% mimics palette mixing. Skip texture or keep depth under 10% or the stroke looks grainy, not oily.

Textured chalk

Stamp from chalk photo or noisy texture, spacing 8–12%, scattering 30–50% with count 2–3, opacity 40–60%, rough paper texture. Good for accents and background, not fine line art. Keep those layers separate—the same idea as working with layers in the editor.

Performance

Brush and canvas size are linked: what flies at 2000 px may freeze at 8000 px.

Spacing and lag

At 1% spacing the engine places many more stamps than at 15%. If lag hits only on large brushes, raise spacing in proportion to size. Temporarily lower preview resolution while filling big areas.

Brush size vs canvas

A 500 px brush on a 12000 px canvas is extreme load. Use fill or gradient for backgrounds; reserve the brush for medium strokes. Export for the web does not need working resolution in the file—think about resolution and DPI before you inflate the canvas “just in case.”

Time to draw, not just read

Theory fades in a couple of days if you never use it. Open the editor and spend 15 minutes on what you just read. That is enough for the skill to stick.

Try it now

A free online editor: brushes, layers, a palette, and a shared canvas. No install and no sign-up.

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Topics in this guide

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