Wasmwise: WebAssembly Lab

An offline WebAssembly structure reader: open a binary to inspect magic bytes, version, section IDs, byte offsets, and payload lengths, and flag malformed lengths.

Wasmwise is an offline WebAssembly structure reader for magic bytes, version, section IDs, section names, byte offsets, payload lengths, and malformed-length findings.

WHAT IT DOES

• Open a user-selected WebAssembly binary
• Validate the magic header and preserve a visible hex preview
• Decode section IDs and unsigned LEB128 payload lengths
• Inspect structure without executing the module

PRIVATE BY DEFAULT No account, advertising, tracking, analytics SDK, or subscription. Workspace data stays in the app container. Imports, scans, device access, and network actions happen only when you request them.

ONE PURCHASE The complete core tool, local workspace, records, analysis, export, and offline reference are included in the paid download.

IMPORTANT BOUNDARY Inspects structure without executing the module. Structural validity is not a security guarantee.