How to convert PNG to DXF
- Drop in the PNGTransparent areas are treated as background automatically, so only your design is traced.
- Confirm the outlinesRed lines show the cut path. Auto threshold is usually right for PNG logos.
- Type the finished sizeWidth or height in mm or inches; the drawing is scaled and placed at 0,0.
- Download DXFImport it into LightBurn, Fusion 360, AutoCAD or your CAM software.
Why PNG converts better than JPG
Lossless edges
PNG stores every pixel exactly. There's no JPEG “halo” of blocky noise around lettering, so outlines come out smoother with fewer nodes.
Transparency
Transparent pixels are composited onto white before tracing, so a logo exported with a transparent background traces with nothing extra around it.
Flat colours
Logos and icons saved as PNG usually have a handful of solid colours, which gives the threshold a clear line to split on.
Getting the best result from a PNG
| Your PNG | What to do |
|---|---|
| Small icon or favicon (under ~300 px) | Find a bigger version if you can. As a rule of thumb, aim for at least 10 pixels per millimetre of finished detail. |
| White logo on a transparent background | Handled automatically: the converter spots light artwork on transparency, traces it against a dark backdrop and switches on Invert. |
| Multi-colour logo | Everything darker than the threshold becomes one shape. Slide the threshold to include or exclude lighter colours, or recolour the parts you don't want in any editor first. |
| Pixel art or QR-style graphics | Switch to Sharp corners so squares stay square. |
| Screenshot of a logo | Crop tightly first; UI chrome around it would be traced too. |
From PNG to cut part
A PNG is made of pixels; a DXF is made of lines with coordinates. The converter finds the boundary of every dark area, fits smooth curves along it and turns those curves into closed polylines. Because the result is scaled to the size you type, a 512 × 512 px logo and a 4000 × 4000 px logo both become a DXF that is exactly, say, 150 mm wide — the higher-resolution one simply has more accurate curves.
Before downloading, glance at the machine check: it tells you how many closed shapes were found, whether anything is open, and if some details are smaller than 0.5 mm at your chosen size. Tiny details are the most common reason a laser job loses fine parts.
Open the DXF in your software
| Software | How to bring the DXF in | Good to know |
|---|---|---|
| LightBurn | File → Import, pick the .dxf | Shapes land on one layer; assign Cut / Line / Fill per layer. |
| Inkscape | File → Open (or Import into an existing drawing) | Handy if you want to edit, then save again as DXF or SVG. |
| Fusion 360 | Insert → Insert DXF, choose a sketch plane | Closed outlines become profiles you can extrude or use in CAM. |
| AutoCAD, DraftSight, LibreCAD | Open the file directly | The drawing starts at 0,0 in the units you chose. |
| SolidWorks | File → Open, choose DXF, import to a new part as a sketch | Use DXF 2007; pick the same units as in the converter. |
| CAM for plasma / router (SheetCAM, VCarve, Aspire…) | Use the program's import for DXF or vectors | Closed contours let the CAM offset for kerf or bit diameter. |