Logo to DXF: how to convert a logo PNG into a DXF file

First: do you already have a vector version?

Before tracing anything, ask whoever made the logo for the original file. If you get an SVG, AI, EPS or PDF, the shapes already exist as vectors and you only need to change the format. Open it in Inkscape and save as DXF. That keeps every curve exactly as designed.

Tracing is for when all you have is a picture: a PNG from the website, a JPG from an email signature, a screenshot. The rest of this guide is for that case.

Option 1: Convert the logo in your browser

The quickest route is a converter that traces the image and writes the DXF for you. On the PNG to DXF converter:

1. Drop the logo file (PNG, JPG or WEBP) on the page.
2. Move the Threshold slider until the preview matches the logo. For a black logo on white the default usually works.
3. Tick Invert if the logo is white on a dark background.
4. Set the real width in millimetres, for example 80 mm for a small sign.
5. Download the DXF (or the SVG for a Glowforge).

You get DXF R12 with closed polylines on layer 0, in millimetres, which LightBurn, xTool Creative Space, Fusion 360, Inkscape and AutoCAD all import. Everything runs in your browser, which matters if the logo belongs to a client.

Option 2: Use Inkscape (free, more control)

Inkscape is free desktop software and a good choice if you want to edit the result: delete a stray node, merge shapes, add bridges. The steps in Inkscape 1.x:

1. File, Import, and pick your logo PNG.
2. Select the image, then Path, Trace Bitmap.
3. Choose Brightness cutoff for a one-colour logo and adjust the threshold until the preview looks right. Click Apply.
4. Move the traced shape aside and delete the original image underneath.
5. Set the size: select the shape and type the width in mm in the toolbar.
6. File, Save As, and pick a DXF option (Inkscape offers R12 and R14). Check the base unit is mm.

The trade-off is time. Inkscape takes a few more minutes and some clicking around menus, but you can fix anything by hand. The browser route is faster for a clean logo that just needs to become a cut file.

Logo problems and how to handle them

Logos have a few issues that photos and silhouettes do not:

• Small text. A tagline under the logo is often too small to cut. If letters are under about 5 mm tall at final size, either make the logo bigger, engrave the text instead of cutting it, or remove it.
• Thin lines. Hairline strokes that look fine on screen burn away in wood or acrylic. Thicken them in the image before tracing, or accept they will be engraved, not cut.
• Letters with holes. The inside of A, O, B, P and R is exported as a separate closed shape so it gets cut out. For a sign that is what you want. For a stencil, the middle will fall out unless you add bridges.
• Several colours. A tracer with one threshold sees only dark and light. For a two-colour logo, make one copy of the image per colour (paint the other colour white), convert each, and you get one DXF per colour or per material layer.
• Gradients and shadows. These do not exist on a cut part. Flatten the logo to solid colours first.

Check the DXF before you cut

1. Import into your laser or CAD software and confirm the width.
2. Zoom into small details and corners. Raise Smoothing and convert again if curves look like steps.
3. Assign a cut layer and preview. Each part should be a closed loop.
4. Cut once on cardboard. It costs a few seconds and shows you which details survive.

Which route should you pick?

Many people use both: the browser converter for a quick first cut file, then Inkscape when a logo needs hand fixes.

Questions