
A drawing saved in a newer AutoCAD won't open in an older one. Here's why (DWG forward-incompatibility) and how to fix it: save down with SAVEAS inside AutoCAD, convert to a lower version online without AutoCAD, and pick the right target version.
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Convert PDF drawings to DWG (AutoCAD format) the right way. Compare free online conversion (no software) with AutoCAD's PDFIMPORT, fix the scale problems that ruin most conversions, and learn which PDFs can—and can't—become editable CAD.
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Need to open a DWG or DXF but don't have AutoCAD? You can view them for free. This guide covers opening DWG/DXF online in your browser (no install), free viewer software like DWG TrueView, editing in free or compatible CAD, why a file won't open (version too new, garbled DXF), and converting it so you can open it.
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