DWG to PS Converter

DWG to PS Conversion Explained

Converting .DWG to .PS changes a working 2D or 3D CAD model into a flat, 2D page description file. People convert dwg to ps primarily to send CAD drawings to legacy high-end printers, plotters, or publishing workflows that require raw PostScript data.

When you perform this conversion, you gain print-ready vector output, exact line weights, and independence from CAD software. However, you lose all 3D data, layers, editability, CAD metadata, and dynamic blocks. You trade a live engineering model for a static, print-only document. If you need to edit the drawing later or share it for digital review, this conversion is a bad idea. You should use .PDF instead.

Typical Tasks and Users

This conversion is highly specific and serves a narrow set of users and workflows:

• Print Shop Operators: Plotting architectural blueprints on legacy PostScript plotters that do not support modern file formats.
• Technical Illustrators: Importing raw CAD line work into vector illustration software like Adobe Illustrator for manual coloring and styling.
• System Administrators: Automating batch print jobs in UNIX/Linux environments where PostScript is the native print spooler format.

Software & Tool Support

You can open, edit, or convert .DWG and .PS files using the following tools:

• AutoCAD: The native editor for .DWG. It can plot directly to .PS using its built-in PostScript plotter drivers (Level 1, 2, or 3).
• Ghostscript: A free, open-source command-line engine used to process, view, or convert .PS files.
• LibreCAD / QCAD: Open-source 2D CAD tools that can export drawings to PostScript or .EPS.
• Adobe Acrobat Pro: Can distill .PS files into .PDF for modern viewing and printing.

Pros and Cons of the Conversion

Pros:

• Print Fidelity: Translates exact line weights and vector paths for high-resolution industrial plotters.
• Vector Scalability: Retains infinite zoom without pixelation for all 2D geometry.
• Legacy Support: Works natively with older commercial printers and UNIX print servers.

Cons:

• Total Loss of 3D: PostScript is strictly 2D. All 3D models are flattened or discarded.
• No Editability: You cannot easily edit geometry, layers, or blocks in a .PS file.
• Large File Sizes: Uncompressed PostScript files can become massive compared to the original, highly optimized .DWG.
• Font Issues: CAD-specific fonts (SHX) often fail to render or are converted to uneditable vector paths.

Conversion Difficulties & Why Convert.Guru

The technical pipeline to convert dwg to ps requires a virtual plotter. The conversion software must map infinite CAD coordinates to physical page dimensions (like A0 or Arch E). Line weights defined by CTB or STB plot style tables must translate accurately to PostScript stroke widths. If the bounding box is calculated incorrectly, the drawing gets cropped. Additionally, .PS refers to PostScript page description files, not MPEG Program Stream (DVR video) files, which cannot store CAD geometry.

Convert.Guru is a strong choice for this task because it handles the virtual plotting automatically. It maps standard CAD layouts to correct PostScript page sizes, outlines fonts to prevent missing text, and flattens layers accurately. You get a reliable print file without needing to configure complex plotter drivers or install expensive CAD software.

DWG vs. PS: What is the better choice?

Which format should you choose?

Choose .DWG when you are actively drafting, sharing files with other engineers, or working with 3D models. It is the industry standard for live CAD data.

Choose .PS only when a specific commercial printer, legacy plotter, or publishing system explicitly requires a raw PostScript file.

Avoid this conversion entirely if you just want to share a non-editable drawing for digital review or modern printing. In almost all modern workflows, you should export your .DWG to .PDF. .PDF is compressed, supports layers, handles fonts better, and opens natively on any device.

Conclusion

Converting .DWG to .PS makes sense only for specialized printing and legacy publishing workflows. The biggest limitation to watch for is the complete loss of CAD data, layers, and 3D geometry, which turns a working engineering model into a flat, static print file. For users who need this specific format without the hassle of configuring CAD plotter drivers, Convert.Guru provides a reliable, automated way to convert dwg to ps with accurate line weights and page scaling.