I built a PDF to DXF converter that doesn’t destroy your curves

If you’ve ever tried to convert a PDF to DXF for laser cutting or CNC, you know the pain.

Most converters take your nice, clean vector curves and turn them into hundreds of tiny line segments. What was a smooth arc becomes a jagged mess of points. Your CAM software slows down, your machine stutters through the cut, and your edges come out faceted instead of smooth.

I got tired of cleaning up these files manually, so I built a tool to fix it.

The problem

PDF files can contain real vector data — arcs, circles, ellipses, bezier curves. But most PDF to DXF converters don’t preserve this geometry. Instead, they approximate everything with polylines.

A circle that should be defined by a center point and radius becomes 200 tiny straight segments. An arc becomes 50 line fragments. The file size explodes, and the geometry loses precision.

For laser cutting and CNC work, this matters:

• More nodes = more processing time for your machine
• Segmented curves = visible facets on cut edges
• Bloated files = slower CAM software

The solution

I built PDF2Laser — a simple web tool that converts PDFs to DXFs while preserving real geometry.

Instead of approximating curves with polylines, it outputs actual DXF arcs, circles, and ellipses. A file that other converters turn into 645 nodes comes out with 136 nodes. Same shape, cleaner geometry.

The result: faster cuts, smoother edges, smaller files.

How it works

Upload a vector PDF, click convert, download your DXF. No signup, no install, no payment.

The tool analyzes the PDF vector data and reconstructs it as proper DXF entities — lines, arcs, circles, ellipses — instead of flattening everything to polylines.

It’s not perfect yet. Some complex PDFs still give it trouble, and I’m improving the curve detection based on user feedback. But for most laser cutting and CNC workflows, it saves a lot of cleanup time.

Try it

If you work with laser cutters or CNC machines and deal with PDF files, give it a shot: pdf2laser.com

I’m actively developing it and would love feedback — especially examples of PDFs that don’t convert well, so I can fix them.