CZD File

What are CZD files and how to open them

Are you having problems opening a CZD file or are you simply curious about its contents? We're here to explain the properties of these files and provide you with software that can open or handle your CZD files.

What is a CZD file?

A .CZD file is a Crash Zone Drawing file.

Crash Zone Drawing is a diagram format produced by the Crash Zone and Crime Zone forensic mapping programs made by The CAD Zone. It serves to store detailed scaled diagrams of accident scenes, crime scenes, and other emergency‐related situations using specialized tools and symbol libraries. It is the program's native drawing format and the default when creating new diagrams.

Files in this format are authored with Crash Zone (or Crime Zone), which supports import of other CAD formats such as DWG, DXF, Generic CADD, total station coordinate files, ASCII data and RAW files from laser measurement devices. Finished diagrams are edited, labeled, and printed from the drawing program. Users may save or export drawings to other formats so they can be shared with CAD software.

These files are stored in a proprietary binary form, beginning with a signature at offset 0x50 0000, containing the ASCII string "CrashZone" at byte-offset 80, and a byte 0x2E at offset 92. These signatures help identify validity of Crash Zone Drawing files.

How to open CZD files

Important: Different programs may use files with the CZD file extension for different purposes, so unless you are sure which format your CZD file is, you may need to try a few different programs.

While we have not verified the app ourselves yet, our users have suggested a single CZD opener which you will find listed below.

Last updated: September 21, 2026

Various apps that use files with this extension

These apps are known to open certain types of CZD files. Remember, different programs may use CZD files for different purposes, so you may need to try out a few of them to be able to open your specific file.

Help us help others

File.org helps thousands of users every day, and we would love to hear from you if you have additional information about CZD file formats, example files, or compatible programs. Please use the links below or email us at submit@file.org to discuss further.