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How to Convert a PDF Drawing to DXF
Drop a PDF onto the preview (or browse for one), pick the page you want, and the converter extracts its vector line-work right in your browser. From there the workflow runs top to bottom in the sidebar: crop a zone around the view you need, set an origin, pick a scale, apply point cleaning, and download the DXF. A measure tool works at every stage, so you can check dimensions before anything leaves the page. And nothing ever does — the file is parsed locally by WebAssembly and is never uploaded.
What the Preview Shows Is What Converts
The extractor reads the PDF the way a renderer draws it: it follows clipping paths, form bounding boxes, soft masks and paint order, so hidden pasteboard copies and masked-out duplicates that lurk inside many CAD exports never reach your DXF. Text and raster images are deliberately skipped — for engineering drawings, the stroked and filled paths are the geometry. If a page shows “no vectors,” it is a scan: there is no line-work in the file to extract.
Getting Real Dimensions Out of a Drawing
PDF pages are measured in points (1/72 inch), so an unscaled export reproduces the drawing at paper size. If you know the sheet’s drawing scale, pick it from the viewport dropdown (1:2, 1:4 … or 2:1 and up for enlarged details). Better still, if any feature carries a dimension, use the two-point scale tool: click across the feature — the picker snaps to endpoints and lines, and Shift locks horizontal/vertical — then type the real distance. Every readout and the exported DXF then speak in real part units.
Origins, Snapping and Measuring
The origin tool decides where DXF (0,0) lands: click a point, or click two lines and their intersection becomes the origin — the lines are extended, which is exactly what you want for a taper apex or an implied corner that is never actually drawn. Measuring works with two points or two lines (angle, and the gap when they are parallel); the pointer snaps to endpoints, onto lines, and to the horizontal/vertical through your first point, so point-to-line distances come out as clean ΔX or ΔY values.
DXF Output and Compatibility
The download is a plain-text R12 DXF (LINE and POLYLINE entities on layer 0) with the full table set old importers expect — it opens in AutoCAD, LibreOffice Draw, QCAD, Fusion and anything else that reads DXF. By default the file is exported unitless: the coordinate values equal the dimensions you measured on the page, so no importer can reinterpret them. If your CAD package honors DXF units, the export menu can flag the file as inches or millimetres instead.
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