application/wasm
The MIME type for WebAssembly modules. Correctly set, it unlocks streaming instantiation in browsers.
Typical extensions
Primary uses
- High-performance compute in browsers
- Plugin sandboxes
- Edge Functions
In a browser
`instantiateStreaming` requires this MIME — otherwise the browser falls back to compile-then-instantiate.
On a server
Serve gzip or brotli compressed; long-lived cache headers pay off for large modules.
In email
Almost never sent via email.