Building Blocks for the Future Web

March 27, 2025— WebAssembly Team, Woven Engineering 1 min read

What you're seeing above isn't a pre-rendered animation. It's a real-time WebAssembly module written in Rust visualizing readers as connected nodes. The ripples show interactions happening now, and this entire experience works even offline.

Today we're doing something a little different. What you're reading right now isn't just a blog post; it's a self-contained web application demonstrating the very concepts it discusses. As you explore this content, you're experiencing WebAssembly, offline-first architecture, and Progressive Web App capabilities in real-time.

Why are we doing this? Because at Woven, we believe these are the building blocks of the web of tomorrow. Resilient, high-performance technology and experiences that work anywhere are essential in the spaces our customers operate. In environments where failure isn't an option, forward-leaning approaches aren't just nice-to-haves. They're a mission-level difference maker.

WebAssembly (WASM) and Progressive Web Apps (PWAs) are quietly revolutionizing how we build and experience the web. While they might not be as flashy as the latest frameworks or AI tools, this duo is enabling a new generation of web applications that function seamlessly, online or off.

Instead of just telling you about these technologies, we've embedded them into this very experience.

Why These Technologies Matter

Here's why they're foundational to the future of the web:

  • Performance: WebAssembly runs code much faster than JavaScript. The impression map above, which responds to your scrolling and interactions in real time, runs smoothly thanks to WASM's performance.
  • Resilience: PWAs continue working even without a network. Your reactions and data are stored locally and synced later. Try toggling your connection to test it.
  • User Experience: Together, they offer a seamless, app-like experience with fast loads, smooth interactivity, and offline functionality. All in your browser, no install required.

WebAssembly

  • Language-agnostic (compile from C, C++, Rust, and more)
  • Near-native performance in the browser
  • Compact binary format for faster loading
  • Secure, sandboxed execution
  • Supported by all major browsers as a W3C standard

Progressive Web App

Your Connection Status

You're currently online.

  • Cached assets for offline access
  • Local data storage using IndexedDB
  • Automatic data synchronization when online
  • Installable as a standalone application

Try it: Turn off your internet connection and continue exploring this page. Everything will still work, and any interactions will sync when you reconnect. You can also install this experience as an app right from your browser.

Real-World Applications

These aren't just theoretical. They're already powering some of the most innovative applications on the web today:

🎨 Design Tools

Figma uses WebAssembly to run its powerful design engine (written in C++) directly in the browser, delivering desktop-level performance.

🌍 3D Visualization

Google Earth Web renders complex 3D terrain using WASM, handling massive datasets efficiently for a buttery-smooth, interactive experience.

🧠 AI in the Browser

Projects like Transformers.js let you run language models such as BERT or GPT entirely in the browser with WebAssembly. That means tasks like search, summarization, or Retrieval-Augmented Generation (RAG) can happen offline, with no server required.

🛰️ Mission-Critical Interfaces

NASA's Open MCT is a web-based platform for space mission operations. WebAssembly is being explored to enhance modularity and performance in visualizing time-critical telemetry—even in low-bandwidth or offline settings.

Start Building Your Own WASM + PWA Experiences

Inspired? Here's your starter toolkit:

Building the Future Web Together

The future looks even more promising as these technologies continue to evolve. WASI (WebAssembly System Interface) is extending WASM beyond the browser, while PWA capabilities are bringing desktop-class features to web apps. Together, they're blurring the lines between native applications and web content, creating a more unified and accessible digital ecosystem.

At Woven, we're not just watching this shift, we're building for it. By embedding these resilient, high-performance patterns into our tooling and platforms, we're helping teams deliver experiences that thrive in the real world: offline, on the edge, and everywhere in between.