How to Use the Curvature Tool in Illustrator

If the Pen Tool has ever made you want to quietly close Illustrator and pretend none of this ever happened, the Curvature Tool is probably your new best friend.

It does the same general job of building vector paths, but in a much friendlier way. Instead of wrestling with handles from the start, you click points and let Illustrator build the curve for you. Then you tidy things up afterwards.

That makes it brilliant for tracing simple drawings, organic shapes, and anything a bit blobby, bendy, or alien-shaped.

Set up a document and place your drawing

Start with a new Illustrator document. A simple print preset works fine, whether that is US Letter or A4. Landscape orientation gives you a bit more room to spread out.

Next, place the image you want to redraw using File > Place. If you set it as a template when placing it, Illustrator puts it on its own locked layer and fades it back automatically.

That is ideal for tracing because the reference stays in the background and you do not accidentally grab it while drawing.

Zoom in on the shape you want to redraw and pan around with the spacebar as needed. A little navigation goes a long way here.

Find the Curvature Tool

Look in the toolbar for the icon that resembles a pen with a little curved tail. That is the Curvature Tool.

It is a great place to start if you are new to vector drawing because it removes a lot of the awkward early complexity. You can build the basic outline first, then worry about polishing it later.

Before drawing, turn off the fill

One small thing that makes tracing much easier: set the fill to none before you start.

If the shape has a fill colour while you are still drawing the outline, Illustrator may show a pale fill that gets in the way and makes the path harder to read. With no fill, you can focus on the stroke only.

How the Curvature Tool actually works

The first click places your starting anchor point. The second click places another point, and at first it can feel like nothing much is happening. Then as you move your cursor away, Illustrator previews the curve between those points.

That is the whole idea. You click a series of anchor points and Illustrator bends the line smoothly through them.

The trick is knowing where to click.

Place anchor points at the apex of each curve

Do not randomly click all over the outline and hope for the best. You want to place points at the biggest changes in direction.

Think of each section of the shape as a separate curve. For each one, look for the spot where the bend is strongest. That peak of directional change is the best place for an anchor point.

It does not have to be mathematically perfect, and it does not always sit exactly in the middle. You are just looking for the moment where the path changes course the most.

So the process becomes:

• Click a starting point

• Move along to the next major bend

• Click again

• Keep working around the shape curve by curve

There is definitely some trial and error here. You click, check the result, then adjust later. That is normal. The real skill is learning to recognise where one curve ends and the next one begins, and that gets easier with practice.

Close the path properly

As you keep clicking, Illustrator will continue adding points forever unless you return to the starting point and close the shape.

When you hover back over the first anchor point, the tool icon changes to show that the path is about to close. Click once and Illustrator joins the end back to the start.

If your finished outline looks a bit wrong at this stage, that is completely fine. The first pass is about getting the structure in place, not about perfection.

If your cursor looks wrong, check Caps Lock

If your tool cursor appears as a little target instead of the usual Curvature Tool icon, there is a good chance Caps Lock is on.

That shortcut switches Illustrator to a more precise cursor display. It is not a disaster, but it can be confusing if you are expecting the normal icon.

Refine the shape by moving anchor points

Once the rough outline is in place, stay with the Curvature Tool and drag anchor points into better positions.

Often that is all you need. A point may just be a little too high, a little too low, or slightly off to one side. Small nudges can clean up a lot.

If Illustrator keeps snapping to nearby geometry and making precision harder, turn off Smart Guides with:

• Command + U on Mac

• Control + U on PC

Smart Guides are useful most of the time, but while tracing a template they can make points jump around when you really just want to place them exactly where you choose.

Add anchor points only when you need them

Sometimes moving existing points is not enough. In that case, add another anchor point directly on the path.

With the line selected, hover over the path with the Curvature Tool and wait for the little plus sign to appear. Click to add a new point, then drag it into place.

This gives you more control, but there is a trade-off.

More anchor points mean more control, but usually less smoothness.

That is one of the biggest lessons with vector drawing. Beginners often add far too many points, then wonder why the line looks bumpy. The smoother result usually comes from using the fewest anchor points you can get away with.

If a path starts looking lumpy, delete unnecessary points. Hover over an anchor point with the Curvature Tool, click it, and remove it.

Use Direct Selection for the real finesse

The Curvature Tool is excellent for getting the path started, but the fine control comes from the Direct Selection Tool, also known as the white arrow.

Click an anchor point with the white arrow and the Bézier handles appear. These handles control how the line flows through the anchor.

Here is the easy way to think about them:

• The anchor point is the exact point the line must pass through

• The handles influence the direction and smoothness of the curve as it passes through

When you drag a handle around, you are changing the angle of the curve. When you drag it farther out, the line becomes smoother through that point. Pull it closer in, and the curve gets tighter or sharper.

There is often a balancing act between the handles on neighbouring points. One handle may be pulling the curve upward while the next is forcing it down. The shape you see is Illustrator trying to satisfy both instructions at once.

The best way to learn this is not to be precious. Grab a handle, wiggle it around, and see what happens. Then slow down and steer it into place once you understand how that specific point is behaving.

Make anchor points easier to click

If selecting anchor points feels annoyingly fiddly, you are not imagining it. Tiny points are hard to hit when you are just learning.

You can make them bigger in Illustrator preferences:

• On Mac: Illustrator > Preferences

• On PC: Edit > Preferences

• Then go to Selection and Anchor Display

Increase the anchor display size and they become much easier to work with. It may look a bit oversized, but while learning, that is often a very good thing.

Convert a point from a corner to a curve

If you close a path and end up with a pointy section where you wanted a smooth bend, you can convert that anchor point.

Select the point with the Direct Selection Tool and use the Convert options to switch it from a corner to a curve.

A corner point lets the handles behave independently, creating a sharper change in direction. A curved point links the handles together more like a seesaw, which gives you a smoother transition.

This is especially useful near the top of rounded shapes where a slightly misbehaving point can make the whole outline feel awkward.

How many points do you need for a circle or ellipse?

This trips up a lot of people.

You cannot build a clean circle with two points. Three is still not enough for a proper smooth result. For anything circular or elliptical, the practical minimum is usually four anchor points.

That is how Illustrator structures a standard ellipse as well: four anchors placed at the top, bottom, left, and right, with balanced handles.

So if you are tracing an eye shape or an oval and wondering why it looks weird, the answer is probably that it does not have enough points in the right places.

A useful zoom behaviour to know

Illustrator zooms differently depending on whether something is selected.

If nothing is selected, zooming tends to go into the middle of the screen. If an object is selected, zooming tends to focus on that object instead.

That explains why zoom sometimes feels clever and sometimes feels completely unhelpful. If you want to zoom into the shape you are working on, select it first and then zoom.

A simple workflow that works well every time

For this kind of tracing job, the workflow is straightforward:

1. Place the reference image as a template

2. Set fill to none

3. Use the Curvature Tool to click around the outline

4. Place points at the major bends, not everywhere

5. Close the path

6. Move points around for a rough cleanup

7. Add or remove points only when needed

8. Switch to the Direct Selection Tool for handle-based refinement

9. Convert any unwanted corners into smooth curves

10. Use four anchor points for circular shapes like eyes

That combination gives you speed first, control second, and far less frustration than trying to brute-force everything with the Pen Tool from the start.

Finish the shape and add colour

Once the alien outline is done, trace the eye shapes the same way, keeping that four-point rule in mind for anything round. After that, you can fill the body and eyes with colour and move on to the rest of the illustration.

The big win here is not just one traced character. It is learning a drawing method you can reuse over and over for logos, icons, mascots, and any sketch that needs turning into clean vector artwork in Adobe Illustrator.

FAQ

Is the Curvature Tool easier than the Pen Tool in Illustrator?

Yes. It is much easier for most beginners because you can place points first and refine later. You still get vector precision, but without managing Bézier handles from the very first click.

Where should I place anchor points when using the Curvature Tool?

Place them at the strongest bends in the shape, where the direction changes most. That usually gives you smoother curves with fewer points.

Why does my traced line look lumpy?

The usual reason is too many anchor points. Remove any that are not necessary and refine the remaining ones with the Direct Selection Tool.

How do I stop Illustrator snapping while I adjust points?

Turn off Smart Guides with Command + U on Mac or Control + U on PC. That stops Illustrator from jumping to nearby alignments while you are trying to trace precisely.

How many anchor points do I need for a circle or oval?

Use four as a baseline. Two or three points usually will not give you a clean, balanced round shape.

What is the difference between a corner point and a curve point?

A corner point allows a sharper direction change because its handles can act independently. A curve point links the handles together for a smoother flow through the anchor.