Which Browsers Support WebAssembly? Your Guide to Cross-Browser Compatibility

Posted by: Nakash Khan Comments: 0

WebAssembly (Wasm) is a cutting-edge technology that allows developers to run high-performance applications on the web. It enables web browsers to execute code at near-native speed, unlocking a new realm of possibilities for web-based applications. However, not all browsers fully support WebAssembly, and it’s essential to understand which ones do to ensure cross-browser compatibility. In this blog, we will explore the browsers that support WebAssembly and how this technology is transforming web development.

Understanding WebAssembly:

WebAssembly is a binary instruction format that serves as a low-level virtual machine for executing code on web browsers. It allows developers to write applications in languages other than JavaScript, such as C, C++, and Rust, and compile them into Wasm, which can then be executed by compatible browsers. This boosts performance, making web applications faster and more responsive.

Browsers That Support WebAssembly:

As of the latest update, the major browsers that support WebAssembly include:

  1. Google Chrome: Chrome has been one of the earliest adopters of WebAssembly and has robust support for running Wasm code.
  2. Mozilla Firefox: Firefox has extensive support for WebAssembly, making it an excellent choice for users who prefer this browser.
  3. Microsoft Edge: Edge has embraced WebAssembly, offering compatibility for Wasm-powered applications.
  4. Safari: Safari also supports WebAssembly but might require enabling the feature in the browser’s settings.
  5. Opera: Opera is another browser that provides WebAssembly support, contributing to the widespread adoption of this technology.

Comparison Table: WebAssembly Support in Major Browsers

BrowserWebAssembly Support
Google ChromeFull support
Mozilla FirefoxFull support
Microsoft EdgeFull support
SafariSupport with enabling in settings
OperaFull support

Stats on WebAssembly Adoption:

  • According to WebAssembly’s official website, as of 2021, over 85% of all internet users had browsers that support WebAssembly.
  • W3Techs reports that over 91% of all websites use browsers that support WebAssembly.


  1. Q: Can I use WebAssembly with older versions of browsers?
    • A: No, WebAssembly requires modern browsers with support for the feature. Older browsers may not fully support or execute Wasm code.
  2. Q: How do I check if my browser supports WebAssembly?
    • A: You can visit a website that uses WebAssembly and see if the application runs smoothly. Alternatively, you can check your browser’s settings for WebAssembly support.
  3. Q: Does WebAssembly replace JavaScript?
    • A: No, WebAssembly complements JavaScript. While WebAssembly improves performance for specific tasks, JavaScript remains essential for overall web development.


WebAssembly is a revolutionary technology that enhances web application performance and opens up new possibilities for developers. Major browsers like Chrome, Firefox, Edge, Safari, and Opera offer robust support for WebAssembly, making it accessible to a vast majority of internet users. By leveraging the power of WebAssembly, developers can create high-performance applications that run seamlessly across compatible browsers. Embrace the future of web development with WebAssembly and deliver exceptional user experiences through fast and responsive web applications.

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