Turns the dark shapes of a BMP into a one-color DXF outline: ideal for logos, signatures and line art.
Click to choose or drag & drop here
Up to 10 files · 50 MB each
Click the upload area or drag your BMP files onto it: up to 10 files at once, 50 MB each.
Each image is made grayscale, and everything darker than mid-gray is traced into smooth closed outlines. Light areas are left out. This takes a few seconds per file.
Download each DXF file, or all of them as one ZIP.
The dark parts of your BMP become smooth closed outlines, ready to cut or edit in CAD.
The result is outlines, not pixels, so it stays sharp when you scale it up for print or cutting.
Works in AutoCAD, LibreCAD, QCAD, Fusion 360 and laser or CNC software such as LightBurn.
No account and no watermark. Up to 10 files at once, 50 MB each. Uploaded and converted files are deleted automatically within 2 hours.
A one-color logo or icon in BMP becomes clean DXF closed outlines. Multi-color logos come out as a single silhouette: every color darker than mid-gray is traced the same way.
Scanned signatures, ink drawings and pencil sketches with strong lines trace well. The paper disappears because it is lighter than mid-gray, leaving only the lines.
Laser cutting, CNC routing, vinyl and plasma cutting, and bringing a logo or sketch into a CAD drawing.
BMP stores a grid of colored pixels. The DXF you get here holds closed POLYLINE outlines in a DXF drawing: the outline of the image's dark areas, traced from pixels into smooth curves.
| Aspect | BMP | DXF |
|---|---|---|
| Color | Every color and shade of gray | Outlines only: dark areas become closed outlines |
| What is kept | Every pixel | Areas darker than mid-gray; lighter areas are dropped |
| Enlarging | Blurs or pixelates when scaled up | Outlines stay sharp when scaled up |
| Fine detail | Kept exactly | Curves smoothed; specks of a pixel or two dropped |
| Opens in | Every device and browser | AutoCAD, LibreCAD, QCAD, Fusion 360 and laser or CNC software such as LightBurn |
| Best for | Photos and multi-color images | Logos, line art, signatures and cut files |
Convert BMP to DXF when the image is a logo, icon, signature or drawing with clear dark shapes on a light background. For photos or multi-color artwork, keep the BMP: the trace would reduce it to a one-color silhouette.
This converter traces your BMP into closed POLYLINE outlines in a DXF drawing. It is built for simple, high-contrast images: logos, icons, signatures, stamps, line drawings and shapes you want to cut with a laser or vinyl cutter. Knowing what the trace keeps helps you get a clean result the first time.
The image is turned into grayscale, and every area darker than mid-gray is traced into closed outlines; everything lighter is treated as background and left out. Colors are not kept: a dark red circle and a dark blue square come out exactly the same, while yellow, pale pink or light gray parts disappear completely. Curves are smoothed, and tiny specks (a pixel or two) are removed as noise. If your download is empty, the image had no areas darker than mid-gray.
BMP files are uncompressed and often large, which is fine: only the dark shapes end up in the vector file, which is usually far smaller. Your BMP is converted to JPG before tracing, which adds slight noise along edges; on clear dark-on-light artwork the mid-gray threshold hides almost all of it. For the best outline, use dark shapes on a plain light background, at least a few hundred pixels across. Darken light-colored parts before uploading if you want them traced, and remove backgrounds that are gray or patterned.
The file opens in AutoCAD, LibreCAD, QCAD, Fusion 360 and laser or CNC software such as LightBurn. DXF outlines have no fill. In your CAD or cutting software, assign the outlines to a layer, line color or cut setting. The DXF has no units set: one pixel of your image is one drawing unit. After importing, scale the drawing to the real size you need.
For a logo, signature or drawing with clear dark lines, the DXF is a sharp, scalable outline you can cut or edit. For photos and multi-color artwork, a trace is not the right tool: keep the original BMP, or have the artwork redrawn by hand in a vector editor.