Convert STL to X3D: The Essential Information

STL to X3D: Resources

Enclosed is a selection of useful resources related to the interoperability and exchange of STL and X3D files. These can be instrumental in facilitating the conversion from STL to X3D files.


The STL (STereoLithography) file format, developed by 3D Systems, a global leader in the 3D printing industry, exclusively contains triangular mesh data. It does not include information on face color, texture, transparency, and named groups. Although it is possible to assign RGB color values to individual vertices, it’s important to note that our STL file converter, Autoconverter software, currently does not support this extension. STL files can be saved in either binary or ASCII text formats, with the binary format being preferred due to its significant reduction in file size. Additionally, it’s worth noting that triangles in STL files are always defined in millimeters, and our STL converter will perform the necessary units conversion if required.

X3D File X3D

The X3D (Extensible 3D) file format is an open-source and royalty-free XML based format, developed and maintained by the Web3D Consortium. It’s designed to store two or three-dimensional models along with various visualization data, including light sources, viewport information, camera properties, special effects, and more. X3D serves as an advanced extension and a replacement for the original VRML file format, which was primarily used in web applications. Both of our X3D file converters, Autoconverter and Automesher Application, allow for the import and export of mesh entities from X3D files. For optimized file sizes, you have the option to use the binary X3DB file format instead of the default text-based X3D file.