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VTF File - What is a .vtf file and how do I open it?
Learn about .VTF files and view a list of programs that open them.
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What is a VTF file? A VTF file is an image file saved in the Valve Texture Format, which is used by video games built with the Source Engine. It stores 2D raster images that are applied to 3D models as textures, which define how surfaces appear in the game, such as colors, patterns, and surface details. Some VTF files also store environment maps or volumetric textures instead of a single flat image.
More Information The Source Engine is a 3D game engine developed by Valve and used in games such as Half-Life 2 , Left 4 Dead , and Portal 2 . Games built with the engine use VTF files for texture data. Developers typically create these textures by converting standard image files, such as .TGA , into the VTF format using tools like Vtex. The format also supports features such as compression and mipmaps, which help improve performance and rendering quality. VTF files can store textures of various sizes, typically up to 4096 × 4096 pixels. Some files contain cube maps made of six images for reflections, while others store volumetric textures composed of multiple stacked images. These variations allow the Source Engine to render a wide range of visual effects efficiently.
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DeveloperVision Numeric
Popularity2.6 | 14 Votes
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.VTF File Extension
2 file types use the .vtf file extension.
Valve Texture Format
| Developer | Valve |
| Popularity |
4.1 | 98 Votes |
What is a VTF file?
A VTF file is an image file saved in the Valve Texture Format, which is used by video games built with the Source Engine. It stores 2D raster images that are applied to 3D models as textures, which define how surfaces appear in the game, such as colors, patterns, and surface details. Some VTF files also store environment maps or volumetric textures instead of a single flat image.
More Information
The Source Engine is a 3D game engine developed by Valve and used in games such as Half-Life 2 , Left 4 Dead , and Portal 2 . Games built with the engine use VTF files for texture data.
Developers typically create these textures by converting standard image files, such as .TGA , into the VTF format using tools like Vtex. The format also supports features such as compression and mipmaps, which help improve performance and rendering quality.
VTF files can store textures of various sizes, typically up to 4096 × 4096 pixels. Some files contain cube maps made of six images for reflections, while others store volumetric textures composed of multiple stacked images. These variations allow the Source Engine to render a wide range of visual effects efficiently.
How to open a VTF file
You can open VTF files with VTFEdit (Windows) or VTF Explorer (Windows). VTFEdit allows you to view, edit, and convert VTF files, while VTF Explorer allows you only to view VTF files.
How to convert a VTF file
You can use VTFEdit (Windows) to convert VTF files to the following formats:
The Convert to it! web app also allows you to upload VTF files and convert them to various formats, including JPEG, PNG, WebP, and SVG.
Open over 400 file formats with File Viewer Plus . Free Download
Programs that open VTF files
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Windows
VTF Explorer
Free
VTFEdit
Free
Web
Convert to it!
Free
Category: Game Files
Updated: March 25, 2026
3DESIGN CAD File
| Developer | Vision Numeric |
| Popularity |
2.6 | 14 Votes |
Three-dimensional design created with Vision Numeric 3DESIGN CAD, a real-time jewelry and graphic object creation program; includes 3D model, surface, and texture data; can be exported to a standard .STL file from within 3DESIGN CAD.
More Information
"VTF" stands for Vision Numeric / Three Design / File.
Programs that open VTF files
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Vision Numeric 3DESIGN CAD
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Vision Numeric 3DESIGN CAD
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Vision Numeric 3DESIGN CAD
Category: CAD Files
Updated: November 6, 2009