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How do I make a laser cut file from a photo?

Matúš Koleják
Matúš KolejákCo-Founder, TechDraw AIView on LinkedIn
Quick answer

Take a straight-on, high-contrast photo of the shape, trace or generate the outline into clean vector paths, set one real measurement so it is to scale, and export a DXF or SVG your laser software can read. The key is that a laser cuts vector paths, not pixels, so the photo always has to become vector geometry first, and the cut file has to be at the correct real-world size.

Why a photo is not a cut file

A laser cutter follows vector paths: lines and arcs it can trace with the beam. A photo is a grid of pixels with no paths in it, so it cannot drive a cut as is. Making a laser cut file from a photo is really one job, turning that picture into clean vector geometry at the right size, and everything else follows from it.

The four steps

  • Photograph the shape straight on. Square to the part, filling the frame, with even light and a plain, high-contrast background so the outline is crisp.
  • Turn it into vectors. Trace or generate the outline into clean closed paths, the geometry the laser actually cuts.
  • Set one real measurement. Enter the true length of one feature so the whole file is scaled to the real part.
  • Export and check. Save a DXF or SVG, confirm every cut profile is a closed loop, and preview it before cutting.
The one step you cannot skip is scale. A laser will happily cut your outline at the wrong size, and the first time you find out is when the part does not fit. One real measurement is what turns a nice outline into a usable cut file.

Getting the vector outline

For a logo or a flat shape, our free image to DXF converter traces the picture in your browser and exports a DXF. The full walk-through, including making the result clean enough to cut on a Glowforge or xTool, is in turning a photo into a Glowforge or xTool cut file, and the format choices are covered in what file format a laser cutter uses.

Make it laser-ready

Before you cut, the file needs closed paths, the right units, and no duplicate lines. Our checklist in how to prepare a DXF for laser cutting covers the pre-flight. If your part is more than a flat outline and needs dimensions or tolerances, generate a full drawing instead, as in converting a photo into a technical drawing.

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