Autodesk's plain-text CAD format — and about as close as a technical drawing gets to opening on a phone at all.
DXF (Drawing Exchange Format) is a CAD file format Autodesk introduced alongside AutoCAD specifically so drawings could move between different CAD programs that otherwise could not read each other's native files. Unlike AutoCAD's own proprietary DWG format, DXF's structure is documented and, in its original form, stored as plain text, which is why far more software, including tools well outside the CAD world, can read it without an official Autodesk license or converter. That openness makes DXF the practical entry point for viewing a technical drawing — a floor plan, a mechanical part, a survey — anywhere other than a full CAD workstation, since DWG files generally need Autodesk's own software or an authorized alternative to open at all. A DXF file on a phone is not something to edit at that level of precision, but rendering it as a PDF is enough to review a drawing, share it with someone who lacks CAD software, or print it, without waiting to get back to a desktop with AutoCAD installed.
iPhone and iPad render DXF files as PDF through Filemorph rather than opening them as an editable drawing, since no CAD engine exists on iOS. Full CAD software — AutoCAD, and various DXF-compatible alternatives — remains the only way to actually edit a DXF drawing rather than just view it.
A DXF file does not open as a viewable drawing outside of CAD software, which most people reviewing a drawing on the go do not have installed. Converting it to PDF on-device turns a technical file format into something anyone can view, share, or print immediately.
Filemorph can convert DXF to PDF on-device — a viewable, shareable, printable version of the drawing without needing CAD software on hand.
Filemorph converts .dxf files entirely on-device on iPhone, iPad and Mac — no upload, no account, and it works in Airplane Mode.
Relevant operations in Filemorph:
Autodesk documented DXF's structure specifically so other CAD software could read it, and the original version stores data as plain text. DWG, AutoCAD's native format, is proprietary and generally needs Autodesk's own software or a licensed alternative to open.
Not at CAD precision — Filemorph renders a DXF file as a PDF for viewing, sharing, or printing, but actually editing the underlying drawing geometry still needs dedicated CAD software on a computer.
Yes. Filemorph renders DXF files as PDF entirely on-device, so a technical drawing or floor plan is never uploaded to a server, and the conversion works with no internet connection.