SWG IFF Viewer

Inspect an IFF in VS Code

1. Right-click an .iff file and choose SWG: View IFF File.
2. Review the file type, byte size, version, form and chunk counts, and unique tags at the top of the panel.
3. Expand the structure tree to inspect nested FORM/chunk tags, offsets, sizes, extracted strings, and data previews.
4. For DTII files, review the column names, types, and row count. Use the optional CLI when you need row output in a terminal.

Note: The viewer is read-only and does not write to the selected IFF.

Viewer scope

Optional wps terminal command

• The command prints the nested IFF chunk tree.
• For DTII DataTables, it also prints rows up to the cliMaxRows setting.
• If the command is unavailable, the graphical VS Code command still works; reinstall the Marketplace package or VSIX and restart VS Code before trying the terminal again.
• Set enableCli to false when you do not want the terminal command enabled.

wps iff-viewer path/to/file.iff

Troubleshooting

• Large files, especially above roughly 50 MB, can take several seconds to parse and render.
• Unknown proprietary chunks remain visible structurally but may have limited semantic previews.
• If the view fails, confirm the file has a valid IFF header and is not truncated.
• Use IFF Deconstructor only for supported DTII DataTables; the viewer recognizing a generic form does not mean that form can be converted to .tab or XML.