README.md
April 9, 2026 · View on GitHub
Source 2 Viewer
Valve's Source 2 resource file format parser, renderer, decompiler, and exporter. The library component is called ValveResourceFormat (VRF).
Important
For more information and downloads of Source 2 Viewer, visit the website.
View Library API documentation here. View guide on getting started with parsing resources.
Contributing
This tool is based entirely on reverse engineering as Valve does not provide Source 2 documentation or code. Not all formats are fully supported. If you are interested in helping, take a look at the open issues and join our Discord. See CONTRIBUTING.md and AGENTS.md for more information.
Supported resource types
| Ext | Name | Support |
|---|---|---|
| vagrp | Animation Group | 👍 |
| valst | Action List | 👍 |
| vanim | Animation | 👍 |
| vanmgrph | Animation Graph | 👍 |
| vcd | Choreo | 👍 |
| vcdlist | Choreo Scene File Data | 👍 |
| vcompmat | Composite Material | 👍 |
| vcss | Panorama Style | 👍 |
| vdata | Data | 👍 |
| vents | EntityLump | 👍 |
| vjs | Panorama Script | 👍 |
| vmap | Map | 👍 |
| vmat | Material | 👍 |
| vmdl | Model | 👍 |
| vmesh | Mesh | 👍 |
| vmix | VMix | 👍 |
| vmks | Sheet | 👍 |
| vmorf | MorphSet | 👍 |
| vnmclip | NmClip | 👍 |
| vnmgrph | NmGraph | 👍 |
| vnmikrig | NmIKRig | 👍 |
| vnmskel | NmSkeleton | 👍 |
| vnmvar | NmGraph Variation | 👍 |
| vpcf | Particle System | 👍 |
| vpdi | Panorama Dynamic Images | 👍 |
| vphys | Physics Collision Mesh | 👍 |
| vpost | Postprocessing Settings | 👍 |
| vpram | Processing Graph Instance | 👍 |
| vpsf | Particle Snapshot | 👍 |
| vpulse | Pulse Graph Definition | 👍 |
| vrman | ResourceManifest | 👍 |
| vrmap | Resource Remap Table | No |
| vrr | Response Rules | 👍 |
| vseq | Sequence Group | No |
| vsmart | Smart Prop | 👍 |
| vsnap | Particle Snapshot | 👍 |
| vsnd | Sound | 👍 |
| vsndevts | Sound Event Script | 👍 |
| vsndstck | Sound Stack Script | 👍 |
| vsurf | Surface Properties | No |
| vsvg | Panorama Vector Graphic | 👍 |
| vtex | Compiled Texture | 👍 |
| vts | Panorama TypeScript | 👍 |
| vvis | World Visibility | 👍 |
| vwnod | World Node | 👍 |
| vwrld | World | 👍 |
| vxml | Panorama Layout | 👍 |
| econitem | Economy Item | 👍 |
| herolist | Dota Hero List | 👍 |
| item | Artifact Item | 👍 |
| vdpn | Dota Patch Notes | 👍 |
| vdvn | Dota Visual Novels | 👍 |
| bin | Tools Asset Info | 👍 Handled by ToolsAssetInfo |
| dat | Closed Captions | 👍 Handled by ClosedCaptions |
| vcs | Compiled Shader | 👍 Handled by CompiledShader |
| vdacdefs | DAC Game Defs Data | No |
| vfe | Flex Scene File | 👍 Handled by FlexSceneFile |
| vfont | Bitmap Font | 👍 Decrypts VFONT1, supported in Source 1 and Source 2. |
| vpk | Pak (package) | 👍 Handled by ValvePak |
List of supported magics
| Magic | Description |
|---|---|
0x03564B56 | VKV\x03 - First binary keyvalues 3 encoding with custom block compression |
0x4B563301 | KV3\x01 - Binary keyvalues 3 (version 1) |
0x4B563302 | KV3\x02 - Binary keyvalues 3 (version 2) |
0x4B563303 | KV3\x03 - Binary keyvalues 3 (version 3) |
0x4B563304 | KV3\x04 - Binary keyvalues 3 (version 4) |
0x4B563305 | KV3\x05 - Binary keyvalues 3 (version 5) |
0x564B4256 | VBKV - binary keyvalues 1 (handled by ValveKeyvalue) |
0x55AA1234 | VPK - valve package (handled by ValvePak) |
0x44434356 | VCCD - closed captions |
0xC4CCACE8 | tools asset info |
0xC4CCACE9 | tools asset info (newer version) |
0x32736376 | vcs2 - compiled shader |
0x414D5A4C | LZMA compression marker |
0x64637662 | bvcd - binary choreo scene |
0xFEEDFACE | navigation mesh |
0xFADEBEAD | grid navigation |
0x31415926 | murmurhash2 seed used by StringToken |
0xEDABCDEF | murmurhash64 seed used to encode resource IDs |
VFONT1 | "encrypted" font file |
0x00564645 | VFE - flex scene file |
GUI
Source 2 Viewer keeps its settings in %LocalAppData%/Source2Viewer/settings.vdf.
License
Contents of this repository are available under MIT license, except for Tests/Files folder which contains files that have likely come from Valve's games.
Code signing policy
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