How to Insert and Trace an Image in SOLIDWORKS

Contents

Inserting an image into SOLIDWORKS can be useful for reverse engineering, recreating geometry from a supplier drawing, tracing a logo, or building a sketch from a photographed part. The important point is that not every image-insertion method is equally useful for tracing. If your goal is to create geometry from a picture, Sketch Picture is usually the correct workflow.

This guide covers the practical insertion options, explains why Sketch Picture is normally the best tracing method, and shows what to check so the traced result is scaled and cleaned up properly.

Why insert an image into SOLIDWORKS?

Images are usually inserted for one of these reasons:

to trace a 2D outline and rebuild it as sketch geometry
to reverse engineer a part from a photo or drawing
to place a reference image directly inside the modeling environment
to create logos, profiles, plates, or decorative geometry from artwork

For tracing work, the image is only the starting point. The real job is building clean, editable sketch geometry from that reference.

The main ways to insert an image

SOLIDWORKS gives you several ways to bring in a picture, but they are not equally good for tracing.

Paste from another application: fast for reference, but not the best controlled tracing workflow.
Insert Object: useful for embedding content, but less suitable when the image needs to live inside a sketch.
Sketch Picture: the best method when you want to scale, position, and trace the image in a sketch.

If the goal is tracing, start in a sketch and use Tools > Sketch Tools > Sketch Picture. That puts the image directly on the active sketch plane, which is exactly where you want it.

Best method: insert the image with Sketch Picture

Sketch Picture is usually the correct choice because it keeps the image tied to the sketch environment. That makes it much easier to position the picture, scale it to a known dimension, and trace over it with lines, arcs, circles, and splines.

A good setup sequence looks like this:

Start a sketch on the plane or face where the image belongs.
Insert the image with Sketch Picture.
Reposition the picture so the important geometry sits in a useful area of the sketch.
Scale the picture against at least one known dimension before you trust the trace.

This is the step many users skip. If the image is not scaled early, the traced sketch may look correct but still be dimensionally wrong.

How to trace the image cleanly

Once the image is inserted, build the geometry manually with the normal sketch tools. In most cases, that means using lines for straight edges, arcs and circles for round features, and splines only where the image truly needs a freeform curve.

Manual tracing is slower than clicking an automatic button, but it usually produces cleaner and more editable results. That matters far more than speed if the sketch will later drive real model features.

Start with the major outline and the main locating features. Do not try to fully define every tiny detail at once. First capture the overall shape, then add the secondary features and constraints.

Scale the traced sketch against a known dimension

After tracing the main geometry, compare at least one known size from the image or supplier information against the traced result. If the scale is off, use Scale Entities to correct the sketch.

This is one of the most important steps in the whole workflow. A trace that looks perfect visually can still be wrong if the picture was inserted at an arbitrary size.

After scaling, add dimensions and relations so the traced geometry becomes a proper sketch rather than a loose outline.

Clean the sketch before using it for features

Once the basic trace is complete, clean it up before turning it into a feature. Typical cleanup work includes:

removing duplicate segments
replacing rough spline sections with cleaner geometry where possible
adding tangent, horizontal, vertical, or concentric relations
checking that circles and holes are truly round and centered
making sure the final contour is suitable for extrusion, cut, or other downstream features

If the image does not contain all needed dimensions, use the trace as a reference only and then rebuild the missing information with engineering judgment or external data. A traced image is not a substitute for real dimensions.

What about Autotrace?

SOLIDWORKS also offers the Autotrace add-in. It can help with high-contrast images, logos, or line-art style references, but it should be treated carefully. Automated tracing can create too many small entities, messy spline chains, or geometry that still needs substantial cleanup.

Autotrace is worth testing when:

the source image has strong contrast
the edges are clean and well defined
the final geometry does not require high manufacturing accuracy

For most engineering sketches, manual cleanup is still necessary even when Autotrace gets you started.

Best practices

Use a high-quality image: low-resolution pictures create poor tracing decisions.
Prefer Sketch Picture for tracing: it gives the best control over placement and scale.
Scale early: do not trust the trace until it matches a known dimension.
Trace only what matters: unnecessary detail makes the sketch harder to clean.
Replace approximate geometry with proper dimensions: the final sketch should be design geometry, not just artwork tracing.

Which insertion method should you use?

Goal	Best method
Quick visual reference only	Paste or Insert Object
Trace an outline in a sketch	Sketch Picture
Start from a logo or strong-contrast line image	Sketch Picture, then test Autotrace if useful
Create production-ready geometry	Sketch Picture plus manual tracing and cleanup

Final thoughts

If your goal is to trace an image in SOLIDWORKS, use Sketch Picture. It is the most controlled and repeatable method, and it keeps the picture where it belongs: inside the sketch that will drive the geometry.

The important part is not just inserting the image. It is scaling it correctly, tracing only the important geometry, and cleaning the sketch so the result is usable for real modeling work.