What is the EDZ file format?
An .edz file is a compressed ECAD visualization package used in the PTC Creo View (formerly ProductView) ecosystem. It is the compressed form of the .ed uncompressed ECAD dataset, bundling PCB schematic and layout visualization data alongside associated overlay and plot files into a single archive for distribution within PTC's Windchill PLM environment.
The format is designed to deliver lightweight ECAD viewing data to engineers and non-CAD stakeholders who need to inspect printed circuit board designs without access to the originating EDA authoring tools. An .edz package may also include references to .pvz structural data, enabling both 2D schematic/layout views and optional 3D component placement visualization within Creo View.
PTC Creo View Lite (bundled with the Windchill client) and the free Creo View Express are the primary applications for opening .edz files. The format is proprietary to PTC with no public specification; the compression is PTC-specific, though it may use a ZIP-based approach internally.
The .edz format originated in the ProductView and Pro/ENGINEER Wildfire era (early 2000s) and continues to be supported through Creo View r12 (2025). The analogous compressed format for mechanical CAD structure data is .pvz.
.edzfiles are used exclusively on Windows systems within Windchill PLM workflows.- The uncompressed counterpart is the
.edECAD dataset file. - File size ranges from 100 KB to 500 MB depending on PCB assembly complexity.
Security & safety
RISK: LOWProprietary PTC visualization format with no known active exploit history. Intended for internal engineering use within PLM systems. Files from unexpected sources should be treated with standard caution for any binary package.
Format details
in a nutshellPrograms that open EDZ files
Windows2 apps
PTC Creo View Lite
Freemium Bundled with PTC Windchill client installation; File → Open the .edz file. Requires a Windchill/Creo View license.
PTC Creo View Express
Free Free lightweight viewer from PTC - download from ptc.com; open .edz via File → Open. Primarily for Creo CAD files; EDZ support may require Lite or higher. Technical details
deep spec| Compression | PTC proprietary (likely ZIP-based internally; exact algorithm not publicly disclosed) |
| Container | Proprietary PTC compressed package wrapping an .ed ECAD dataset |
| Encoding | Binary |
| Byte order | Little-endian |
| Uncompressed equivalent | .ed (uncompressed ECAD dataset file) |
| Parallel format for MCAD | .pvz - compressed structural/3D CAD package (analogous role for mechanical data) |
| Typical contents | .ed ECAD data, .ol overlay files, .plt plot files |
| Typical file size | 100 KB - 500 MB (PCB/ECAD assembly complexity dependent) |
| File signature | Not publicly documented; possibly ZIP-like magic bytes |
| Platform | Windows (Creo View and Windchill client environment) |
| PLM ecosystem | Used within PTC Windchill for lightweight product visualization distribution to non-CAD users |
| Primary viewer | Creo View Lite (Windchill-bundled); Creo View Express (free download from PTC) |
| Format specification | Proprietary to PTC; not publicly disclosed |
| Current support | PTC Creo View r12 (2025) |
| Released | Early 2000s (ProductView / Pro/ENGINEER Wildfire era) |
| Latest version | Current with Creo View r12 (2025) |
| Specification | support.ptc.com |
EDZ conversions
Community Q&A
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