Image to SKP Free: Turn a JPG or PNG Into SketchUp Faces, One Group per Colour

Get Tracepen on the SketchUp Extension Warehouse (free) →

To convert an image to SKP, install the free Tracepen extension, pick the JPG or PNG, type its real width and press Load to SketchUp. It traces the picture into native SketchUp faces, one group and one material per colour, straight into the model you already have open: no .skp file to download, nothing to import, nothing to redraw. It is made for logos, icons, badges, signs and other flat-colour graphics you want as real geometry to Push/Pull, paint or send to a cutter.

Two things up front. The result is flat faces on the ground plane, not a 3D model of the picture: nothing estimates depth, you pull each colour up yourself with Push/Pull. And the trace is deterministic, not AI: the same picture always gives the same outlines. If you want a photographed object turned into a 3D object, that is a different tool, and the table below says which.

Free: every feature and full colour, with 3 free exports a day on a free 3dshouse account (sign-in required). Every Load to SketchUp is one export; picking, tracing and tuning are never counted. The same tracer also runs as a web app, a Blender add-on and a Figma plugin, and the daily allowance is shared across all four.

Video

Image to SKP: which route fits your picture?

“Image to SKP” covers four different jobs. Pick yours before you install anything:

Your picture	What you want	Route
Logo, icon, badge, sign, flat-colour artwork	Editable faces, one colour per group	Tracepen (this page): outlines, holes and colours become real faces.
Any picture	A relief where brighter pixels rise higher	Converters that map brightness to height. ImageToStl’s JPG to SKP page, for example, offers Extrude and Standard (heightmap) modes and resizes images above 1200 x 1200 pixels. With Tracepen you can get a stepped relief another way: one Push/Pull per colour group.
Photo of an object, such as a chair	A 3D object	Not Tracepen. SketchUp’s own Generate Object tab in SketchUp Assistant builds a 3D object from up to four .png, .jpg, .jpeg or .heic images (50 MB or less; a white background works best), and services such as FurniMesh aim at furniture photos.
Photo of a building	A model you draw over the photo	Not Tracepen. SketchUp’s Match Photo works best with “structures made mostly of right angles” and a photo with two vanishing points.
Floor plan or scanned drawing	Walls and rooms as faces	Not Tracepen: the colour regions of a plan are too small to come out as usable faces.

How to convert an image to a SketchUp model, step by step

1. Open Extensions → TracePen (or the TracePen toolbar button). Signed out, the dialog opens on a card titled Sign in to Tracepen: press Sign in with 3dshouse, finish in the browser tab that opens, then come back to SketchUp.
2. Click the picture area to choose your JPG, PNG, WebP, GIF or BMP, or drop the file on it. Until your first finished trace a Try a sample strip offers ready-made images, flat graphics first.
3. Wait a moment: Analyzing…, then the trace starts by itself. Tracepen counts the colours it found and sets the Color number slider to that count; the slider can only go down from there (minimum 1).
4. Not happy with the preview? Adjust Color number, Noise filter (Off, 1-5), Merge min area (1-64 px) or Corner smooth (0-100%), then press Convert to trace again. The defaults are Off, 4 px and 80%. To keep only part of the picture, press Crop, choose the area, then press Convert.
5. Under Color Layers every colour has a swatch you can recolour and a checkbox. Unticked colours are not loaded. The line next to the heading, N faces / M layers, gives you a quick idea how heavy the insert will be.
6. Type the real width of the picture in the Width box (millimetres in a metric model, inches in an imperial one) and press Load to SketchUp. The button counts colours as they arrive, for example 2/5.

What lands in your model

• One component named TracePen, placed at the origin: the picture’s bottom-left corner sits on the origin, its top edge points toward +Y, everything at Z = 0. Look from the Top view.
• One group per colour, named Layer 00, Layer 01 and so on. The colour with the largest area comes first, the rest follow by similarity of colour.
• One material per colour, named TracePen_R_G_B with three-digit values (TracePen_255_128_000), painted on both sides of every face so the colour shows whichever way a face points.
• Holes stay holes: an outline and its inner outlines become one face (the counter of an O is open), and an island inside a hole gets its own face.
• Straight-edged polygons: a curved outline arrives as a short run of straight edges, and the edges are not softened. A rounder outline means more edges, which is also why a picture with hundreds of tiny blobs makes a heavy group.
• One Undo step by design: the insert is chained into a single SketchUp operation, and SketchUp’s API docs say a transparent operation is appended to the previous one instead of adding an undo step.

From flat faces to a 3D model: Push/Pull each colour

Because every colour is its own group, the usual next move is one Push/Pull per group: raised lettering over a plate, an inlay, a stamped badge, a layered relief, a cut-out. One SketchUp rule to know first: its troubleshooting page says “The Push/Pull tool cannot extrude objects that are a part of a Component or Group” and the fix is to double-click the container to edit it, then pick the face. Here the faces sit inside a layer group inside the TracePen component, so double-click the component, then the layer group, then Push/Pull.

• Paint over a whole colour in one click: select the group, apply your own material, and the traced colour is gone. The TracePen_R_G_B materials are ordinary SketchUp materials you can edit or purge.
• Delete a colour you no longer want inside the component instead of tracing again, but note that re-tracing the same picture refills the component and would undo that edit.
• Move, rotate, scale or array the component like any other component. Re-tracing the same image refills it in place, so the instance keeps its position and scale.
• Trace at 1 colour for a cut-out or stencil: a single silhouette face is the fastest route to a plate with a shape knocked out of it.
• Need lines rather than faces? The web app exports the same trace as DXF Lines or DXF Hatch; see PNG or JPG to DXF for laser and CNC.

Every control in the dialog, and what it changes

• Image: the picker takes PNG, JPG/JPEG, WebP, GIF or BMP, up to 50 MB and 250 million pixels. Past either limit the panel says so in words instead of failing quietly, and a file that is not an image is named in the error.
• Crop: cut the picture down to the part you want, then press Convert. The Width you type later applies to the cropped area, so cropping is also how you get a logo to the right size without maths.
• Color number: starts at the number of colours Tracepen found and only goes down, so you can collapse a near-duplicate pair into one group. At 1 you get a single dark silhouette.
• Noise filter (Off, 1-5): evens out a grainy photo or a JPEG that was saved too hard, so a flat area does not come out speckled. Leave it Off for clean artwork.
• Merge min area (1-64 px, default 4): the smallest colour patch kept. Smaller specks are absorbed into the colour around them, and a colour never disappears completely, so a thin outline survives even at 64 px.
• Corner smooth (0-100%, default 80%): 0% keeps every corner sharp, 100% rounds them. Lettering with mitred corners wants a low value; a hand-drawn shape wants a high one.
• Color Layers: one swatch per colour, each with a colour picker and a checkbox. Recolour a layer before loading and the SketchUp material takes the colour you picked, so you can fix a dull scan without touching the picture. Untick a layer and it is left out of the insert.
• N faces / M layers: a quick estimate of the shapes the insert will build. A number in the thousands is a sign to raise Merge min area or lower Color number first.
• Line thickness and Line color: preview styling only (they also become the stroke in the web app’s SVG and PDF). SketchUp faces are built from the filled areas alone.
• Width: the real width of the picture in the model’s own units. Everything else scales from it.

Gotchas that come from the source

• A transparent PNG does not give an empty background. The see-through area arrives as a solid colour layer, white, or black when the picture already contains pure white. Untick it in Color Layers before loading.
• Tracing the same picture again replaces the component’s contents. Placement and scale of the instance survive, but anything you modified inside the component is erased. The picture’s identity is its file name plus its pixel size after cropping and resizing, so a cropped or renamed copy loads as a second component instead.
• The Width box starts at 1000. In an imperial model that is 1000 inches, so set it before every load. The unit is read once, when the dialog opens: if you change the model’s units afterwards, reopen the dialog.
• Pictures are traced at up to 1500 px on the longest side. Larger files are scaled down first, and Width is applied to the cropped, scaled result. A 4000 px logo therefore gains nothing over a 1500 px one.
• Very small widths lose detail. SketchUp’s own point tolerance is 0.0254 mm, and outlines finer than that merge or vanish. A 1500 px trace loaded 60 mm wide gives 0.04 mm per pixel, which is already close to that floor.
• A face SketchUp refuses is skipped without a message. The rest of the colour still loads, so compare the N faces estimate with what you see if a tiny detail is missing.
• A colour with very many separate regions can time out with SketchUp load failed: timeout waiting for layer-faces-ack. Lower Color number or raise Merge min area so each colour carries fewer regions, then load again.

Where it works well, and where it stops

• It is meant for flat-colour artwork: logos, icons, illustrations, signage, stencils. With that kind of picture the colours you see are the colours you get.
• A photo to SKP trace gives flat colour patches, not a likeness, and a busy photo means a very heavy model. Flat artwork is what it is built for; floor plans and scanned drawings are not.
• Output is colour only: no image texture is applied, and no depth is inferred from shading.
• The dialog loads its interface from tracepen.3dshouse.com every time it opens, so it needs an internet connection.
• The picture itself is not uploaded. Tracing runs inside the dialog on your computer; the requests the dialog makes (sign-in, plan and daily-usage checks, a page-step counter) carry no pixels.

Image to SketchUp: Tracepen vs importing, tracing by hand or DXF

• Import the picture. According to SketchUp’s help, Use As Image makes an image entity that is “similar to a face”, and Use As Texture paints a face and creates a material. In both cases the picture stays a picture: there are no outline edges to push-pull.
• Trace it by hand. The same guide has a Tracing Images section: pick a drawing tool and draw over the imported image. That suits a few simple shapes, and if your edges end up open you can create the faces from those edges in one click. Tracepen instead produces the outlines, holes and colour groups in one pass.
• DXF. SketchUp lists faces and 3D faces among the CAD entities it imports (a subscriber feature). The web app can export DXF Faces for that route; the plugin skips the file round trip, builds faces with real holes instead of triangles, and lets you type the width in the model’s units.
• One-colour tracers. A tool that only splits dark from light turns a five-colour logo into one silhouette; Tracepen keeps one group per colour. It is not an AI redraw either, which would be a new picture that only resembles yours.

Need a vector file for another program instead? The image to vector tool comparison sets Tracepen next to Illustrator, CorelDRAW and Vector Magic, logo to vector covers blurry logos, and PNG to SVG explains real paths versus a wrapped bitmap.

Install

Get it on Extension Warehouse →

1. In SketchUp open Extensions → Extension Warehouse, search Trace Pen and click Install (SketchUp’s help: “adding most extensions is as easy as clicking Install on an extension’s details page”). The listing is the button above.
2. Open it from Extensions → TracePen, sign in with a free 3dshouse account, then trace and load the result. It is free to use, with 3 exports a day.

If TracePen is missing from the Extensions menu, open Extension Manager: each extension has an enable toggle on the Home tab, and Settings holds the loading policy, where Identified Extensions Only loads only extensions signed by a registered SketchUp Developer.

Requirements

• SketchUp 2022 or newer, desktop, Windows or macOS. Older versions get a message that points to the web app. Extension Warehouse describes its extensions as developed specifically for SketchUp’s desktop application, so this plugin is not for SketchUp in the browser.
• SketchUp 2026 itself lists Windows 11 and macOS 14 or newer.
• An internet connection and a free 3dshouse account.

FAQ

Is there a free image to SKP converter online?
Tracepen is a free plugin for desktop SketchUp, not a website that hands you a .skp file: the faces are built inside your open model. The Tracepen web app is the online half and exports SVG, PNG, PDF and three DXF flavours (Lines, Hatch, Faces), not .skp.

How do I convert a JPG to SKP for free?
Install the plugin, open Extensions → TracePen, pick the JPG (it traces by itself), type the real width and press Load to SketchUp. The faces land in the model you already have open, so the .skp file is simply the one you save afterwards. PNG, JPEG, WebP, GIF and BMP go the same way.

Can I turn a PNG or JPG into a 3D SketchUp model?
Tracepen turns it into flat faces on the ground plane, one group per colour. Nothing in it estimates depth: you give the shapes height with Push/Pull, one group at a time. For a photographed object, see the table at the top of this page.

Can I convert a photo to SKP?
Tracepen accepts a photo, but it gives flat colour patches, not a likeness of the scene, and a very heavy model. It is built for flat-colour artwork such as logos and icons.

How do I trace an image in SketchUp?
By hand: import the picture as an image with File → Import and trace it with SketchUp’s drawing tools, as SketchUp’s own guide describes. Automatically: install Tracepen, open Extensions → TracePen, choose the image (it traces by itself), then set the Width and press Load to SketchUp.