3D-Tool Free Viewer

View CAD data for free

intuitive & practical 3D without CAD expertise
affordable & universal many 3D/2D interfaces

Free CAD Viewer for teamwork and publishing

With the 3D-Tool Free Viewer, you open 3D-Tool models in DDD format as well as STL and 3MF files. You display, inspect, measure and analyze the models. The Free Viewer is also free for commercial use.

Free Viewer
Download for free
Free 3D CAD viewer for DDD, STL and 3MF files

What is the 3D-Tool Free Viewer suitable for?

The 3D-Tool Free Viewer opens DDD, STL and 3MF files on Windows for viewing, measurement and analysis. Cross-sections and exploded views make parts and assemblies easier to inspect. Teams can review shared designs and examine models for 3D printing and rapid prototyping.

You publish models from CAD systems such as CATIA or SolidWorks as DDD files using a licensed version of the 3D-Tool Viewer. The Free Viewer opens these DDD files.

3D-Tool Free Viewer - free 3D Viewer

Visualize DDD, STL and 3MF files professionally

The Free Viewer is not a trial version but free software with no time limit. It includes many 3D-Tool measurement functions and analysis tools. Its intuitive operation makes it easier for everyone to evaluate 3D designs and speeds up collaboration.

In addition to 3D-Tool DDD files, the Free Viewer also opens 3MF and STL files. This makes it an efficient, free tool for 3D printing, rapid prototyping and quick inspection of 3D models.

The Free Viewer runs on any Windows PC. The compact installer requires no registration. Installation is straightforward and usually possible without admin rights. Use is free - with no advertising and no time limit.

Download the Free Viewer

Screenshot of the 3D-Tool Free Viewer user interface. The loaded 3D model has been exploded, dimensioned, and analyzed for wall thickness.
The 3D-Tool Free Viewer is a free and easy-to-use CAD viewer for 3D-Tool DDD, 3MF, and STL files. A wide range of measurement and analysis functions sets it apart from other free 3D viewers.
Poster of screenshot and software box as a symbol for the trial version of the 3D-Tool Viewer and Converter
Download the 3D-Tool Viewer. The trial key is valid for 14 days and lets you test all functions for free with no obligation.

Test imports from CATIA, SolidWorks, Designcenter (NX), Creo, Autodesk, X_T, STEP and more

A licensed version of the 3D-Tool Viewer is required to create DDD files. After installation, you can request a free trial key:

  • The trial key activates all functions and import formats, including CATIA, SolidWorks, Designcenter (Siemens NX), I-DEAS, Creo, Inventor, Designcenter Solid Edge, Navisworks, Rhino, JT, X_T, STEP, IGES, VDA and SAT.
  • The trial key activates conversion of these CAD formats to STEP, IGES, JT, SAT and X_T.
  • The trial key activates publishing in the 3D-Tool DDD format, as 3D-PDF and as an HTML page.
  • The trial key activates saving to many 3D visualization formats, including 3DS, 3MF, OBJ, PLY, FBX and glTF.

Test all formats with the trial key

Publish CATIA, SolidWorks, Designcenter (NX), Creo and Autodesk

With a Premium license, 3D-Tool opens a wide range of CAD files. These include native formats from many CAD programs, 3D exchange formats such as JT, STEP and IGES, and 2D formats such as DWG and DXF.

Publish models and drawings directly or add annotations and dimensions first. This makes 3D-Tool a universal tool for coordination, control and documentation - from development to sales.

Publish your designs as:

  • DDD files for the 3D-Tool Free Viewer
  • 3D-PDF for Adobe Acrobat Reader
  • HTML pages for modern browsers
  • JT files for the free JT2Go
Schematic representation of the publishing options of the 3D-Tool Viewer
With a Premium license, you can publish your 3D models in different formats that can then be viewed with free 3D viewing options.

Frequently Asked Questions (FAQ)

Is the 3D-Tool Free Viewer really free?

Yes. The Free Viewer is free software with no time limit - not a trial version. There are no ads. It opens DDD, STL and 3MF files. DDD files can contain both 3D CAD models and 2D drawings that you can view, measure and analyze.

Which file formats can the Free Viewer open?

The Free Viewer opens 3D-Tool DDD files as well as STL and 3MF files. This makes it a practical, free tool for inspecting published models and for 3D printing and rapid prototyping.

Do I need to register or have admin rights to install the Free Viewer?

No. The compact installer requires no registration and runs on any Windows PC - usually without admin rights. Installation is quick and straightforward.

What can I do with the Free Viewer?

With the 3D-Tool Free Viewer, you view, rotate and measure models. You create cross-sections and exploded views, show and hide individual components, create dimensions and annotations, and analyze models. You operate all functions by point and click and without CAD knowledge.

How do I create DDD files that others can open in the Free Viewer?

You create DDD files with a licensed 3D-Tool Viewer. After installation, you can request a free trial key. The trial key unlocks all import formats, including CATIA, Designcenter (Siemens NX), Creo, SolidWorks, STEP and JT. It also enables publishing as DDD, 3D-PDF and HTML.