What is a .VDF file?
VDF is Valve’s KeyValues text format, used throughout Steam and Source-engine games. Read by Steam.
- Did you know
- VDF files store everything from Steam settings to Source-engine game data.
- VDF uses Valve’s KeyValues format, a hierarchical tree of key-value pairs delimited only by quotes and braces, conceptually close to JSON or YAML.
- The same KeyValues format underlies many Steam and Source-engine files, including app manifests and material definitions.
- What Analyser reads
- Parse Valve KeyValues files (VDF) and Steam app manifests (ACF) - appmanifest, libraryfolders, loginusers, and config - surfacing the App ID, name, install dir, size on disk, and the full key tree.
- Depth of analysis
- .VDF is an identification-grade format: Analyser recognises it from its bytes and decodes the header metadata it carries, rather than opening it in a full viewer. Formats that do get a full viewer are marked "Full" on the formats page.
- Open a .VDF file
- Drag a .VDF file onto the Analyser home page (or tap to pick one). It is identified entirely in your browser - nothing is uploaded, there is no account, and it works offline once installed.
- Related formats
- .ACF. See all supported file types.