# Minimal requirements to load a wasm To load web assembly file, you need to write some code to fetch the binary and execute it. As today, there's no other method than use Javascript. The code is pretty simple must and be set inside your html page. {% hint style="info" %} Wasmbrowsertest will inserted you automatically. You won't need it when you use it. {% endhint %} ``` ``` {% hint style="info" %} You app.wasm must be served with a mime-type set to 'application/wasm' If your app can be launched and you have the "Failed to execute 'compile' on 'WebAssembly': Incorrect response MIME type. Expected 'application/wasm' ", Check your webserver settings to accept wasm mime type {% endhint %} The wasm\_exec.js is provided by your compiler and must be the exact version proposed by your compiler when compiling your webassembly application ## Location of wasm\_exec.js For a standard GO compiler: ``` $(go env GOROOT)/misc/wasm/wasm_exec.js ``` For TinyGo compiler: ``` /usr/local/tinygo/targets/wasm_exec.js ```