The GDTF Editor is an extension for the Visual Studio Code and VSCodium, allowing to view, edit and validate GDTF files. Such extension is aimed at developers who work with GDTF files.

It provides a virtual folder viewer for the GDTF files, listing DMX Modes, thumbnails, revisions, connectors, gobos and more for a nice preview:

Under the hood it is utilizing the GDTF.xsd definition file for XML validation and requires xmllint to be present on the computer. While editing a GDTF file, if an error occurs, an explanation is displayed on mouse hover:

During editing, media content can be previewed:

While not aimed at regular users, this extension can be very useful for developers, offering additional tooling right at their fingertips.