wat2wasm Demo

Assembles WebAssembly text format to a binary module and runs the JavaScript harness.

Artifact by WebAssembly Community

IndexedApache-2.0★ 8,186Developer toolsNo sign-up

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Opens webassembly.github.io in a new tab. Nothing to install.

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You provide: WAT source and JS
You get: Compiled wasm and run output
Account: No sign-up needed
AI: No AI: a plain tool
Your input: Not stated: check the tool's privacy notes before using private data
Price: Free to use
Made with: Open-source web app
Source: Open source
Link check: Answered on Oct 31, 2026

About

wat2wasm Demo is an open-source web app in the developer tools category (webassembly assembler). It opens in your browser, so there is nothing to install. You provide WAT source and JS and get compiled wasm and run output. It needs no account. It is a plain tool: no AI model is involved. The source code is public on GitHub (WebAssembly/wabt).

Category: Developer tools · webassembly assembler

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Stars: 8,186

Details

Auth: No auth
License: Apache-2.0
Repository: github.com/WebAssembly/wabt
Website: webassembly.github.io/wabt/demo/wat2wasm/
First seen: Oct 31, 2026
Last checked: Oct 31, 2026
Source: GitHub