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ICO to DXF Converter

Upload a .ico and download its largest frame as a DXF of editable polylines — ready to scale up, cut or engrave. Free, no account.

output

Drop images here, or click to choose

Conversion starts immediately. Up to 100 MB per file. You can also paste a screenshot

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How to convert ICO to DXF

Upload your ICO file

Drop your .ico on the converter, click to browse, or paste a screenshot with Ctrl+V.

We trace the lines

Every frame in the icon is decoded and the largest is selected, then traced as closed outlines because icon art is solid shapes rather than strokes.

Download a real DXF

You get an R2000 ASCII DXF with editable LWPOLYLINE geometry — the open CAD exchange format — editable geometry, ready to draft on, not a picture to trace again.

What you get: lines, not pictures

A floor plan with solid walls, furniture and text — and the CAD geometry this converter produces from it. Walls keep both faces, every thin line is a single editable polyline, and labels become real editable text.

Example ICO floor plan before conversion — Input: raster image (solid walls, thin furniture lines, text)

Editable DXF vector drawing produced by the converter — Output: editable DXF polylines (walls outlined, lines centerlined)

About ICO to DXF conversion

A Windows .ico is a container holding the same artwork at several resolutions — 16×16 up to 256×256 — so the operating system never has to scale. That structure is what makes it convertible at all: the largest frame is picked automatically, because pixel count is the only thing standing between an icon and a usable vector outline.

Two things follow from what icons actually are. First, they are solid glyphs rather than line drawings, so they trace as closed outlines along both real edges — which is the right form for engraving or cutting the shape, and the wrong form if you expected centerlines. Second, resolution sets a hard ceiling. A 256×256 frame gives an outline accurate enough to scale up and clean into a proper cut path; a 16×16 frame is a few dozen meaningful pixels and produces a blocky staircase no amount of smoothing will rescue. Treat small icons as a proportion reference to redraw from, not as production artwork.

Frequently asked questions

Which frame inside the .ico is used?

The largest, chosen automatically by pixel count. Icons commonly hold 16, 32, 48 and 256 pixel versions of the same artwork; the 256 gives dramatically better geometry, and there is nothing to gain from the smaller ones.

Can I cut or engrave the resulting DXF?

A 256×256 source usually gives a clean enough outline to scale and cut, especially for simple glyphs. Inspect the polyline at final size first — icon edges are anti-aliased, and the staircase that hides at 32 pixels is obvious at 200 mm.

Why are my icon's shapes outlined rather than centerlined?

Because they are solid, and the tracer classifies ink by thickness. Thin strokes become single centerlines; filled areas are traced along both edges so the shape keeps its boundary. For cutting an icon, outlines are what you want.

Are PNG-compressed ICO frames supported?

Yes. Modern icons store their large frames as embedded PNG and their small ones as raw bitmaps; both encodings are decoded here, and the frame selection happens after decoding either way.

My icon is white on a transparent background — nothing came out.

Transparency is composited onto white before thresholding, so white artwork on transparency becomes white on white and there is nothing left to find. Invert the image, or place it on a dark background, before uploading.

Convert from a script or an AI agent

The same conversion is one HTTP call — no key, no account, no rate limit. The full machine-readable spec lives at /llms.txt.

curl -X POST https://nasji.com/api/convert \
  -F "[email protected]" \
  -F "target=dxf" \
  -o drawing.dxf