Files with vtx file extension are mostly related to the Source SDK mesh strip format that is used by various video games from Valve.

There are 4 other file types using
the VTX file extension!

empty icon.vtx - Vertex 2D CAD drawing

vtx icon.vtx - Microsoft Visio XML template

empty icon.vtx - Anim8or 3D model

empty icon.vtx - Vortex Tracker audio data

VTX file extension - Source SDK mesh strip format

What is vtx file? How to open vtx files?

File type specification:

Game file type icon Game file type

The vtx file extension is associated with the Source engine, which is used by Half-Life 2, Left 4 Dead, Team Fortress 2 and other video games, developed by Valve.

The .vtx file contains hardware optimized material, skinning and triangle strip/fan information.

Some Source based games, also use customised Source SDK (known as Authoring Tools) for their modding.

The default software associated to open vtx file:

Source SDK icon

Valve Corporation logoSource SDK  Microsoft Windows software

Company or developer:
Valve Corporation

Source SDK is free development environment used to create mods and content for the Source 2006, Source 2007 and Source 2009 engine branches and related video games, like Half-Life 2, Dota 2, Team Fortress 2, Left 4 Dead, Portal, etc.

Valve Hammer Editor icon

Valve Corporation logoValve Hammer Editor  Microsoft Windows software

Company or developer:
Valve Corporation

Valve Hammer Editor is Valve Software's map creation program for their game engine - Source engine.

The current version supports both Source and GoldSrc, and can only be accessed via a free download of the Source engine SDK.

Half-Life 2 icon

Valve Corporation logoHalf-Life 2  Microsoft Windows software

Company or developer:
Valve Corporation

Half-Life 2 is successor of legendary 3D first person shooter computer game Half-Life. Player takes role of scientist Gordon Freeman that have traveled to City 17 in the Eastern Europe. Freeman is forced to fight against increasingly unfavorable odds in order to survive. In his struggle, he is joined by various allies, including former Black Mesa colleagues, oppressed citizens of City 17, and the Vortigaunts. The game uses the Source game engine, which includes a heavily modified version of the Havok physics engine.

Help how to open:

Use Source SDK to open and work with *.vtx files.

How to convert:

Some sort of export or conversion of the 3D content is perhaps possible with the SDK.

List of software applications associated to the .vtx file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open vtx file, edit vtx file, convert vtx file, view vtx file, play vtx file etc. (if exist software for corresponding action in's database).

Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting vtx files.

Software that open vtx file - Source SDK mesh strip format

Programs supporting the exension vtx on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about Source SDK for open vtx file action.

Microsoft Windows:

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