WASM viewer
To open a WASM file, drop it in the box below. It opens straight away, even with no extension or the wrong one. Your browser opens it on your device: nothing is uploaded.
Open in
Opened on this device, never uploadedDrop or paste another file at any time
What you see
| WASM in the viewer | |
|---|---|
| Imports, exports | Listed with their kind |
| Built with | From the producers section |
| Safety | Read from its headers only: nothing in it is run |
| Extensions | .wasm |
| Upload | None: opened on your device |
What is a WASM file?
In short
A .wasm file is a WebAssembly module: compiled code that browsers and other hosts run at near native speed.
Its sections and sizes, what it imports and exports, its memory, the tools that built it, and whether it runs code on loading.
How to open a WASM file
- Add your WASM. Drop the file in the box, choose it or paste it.
- Look at it. Its sections and sizes, what it imports and exports, its memory, the tools that built it, and whether it runs code on loading.
- Take it further. Download any file from inside an archive, or open another file.
Questions
Drop it here: every export and import is listed.
Yes. The viewer reads the file’s headers as data; the program never runs. Nothing is uploaded either.
No. The viewer runs in your browser and opens the file on your device. Nothing is sent anywhere.