# Webassembly

> WebAssembly

- Skill: `ffsshhttiikk/webassembly` (Agent Skill)
- Install (CLI): `npx skillmds@latest add ffsshhttiikk/webassembly`
- Raw SKILL.md: https://api.skillmd.com/api/skills/ffsshhttiikk/webassembly/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: ffsshhttiikk (https://skillmd.com/u/ffsshhttiikk)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/ffsshhttiikk/webassembly

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# WebAssembly

WebAssembly (Wasm) is a binary instruction format for a stack-based virtual machine. It enables high-performance execution in web browsers and beyond, providing near-native execution speed for code written in C, C++, Rust, and other languages.

## Key Concepts

- Binary format for executable code
- Stack-based virtual machine
- Near-native performance in browsers
- Language-agnostic compilation target
- Sandboxed execution environment

## Common Use Cases

- High-performance web applications
- Video/image processing
- Games
- Scientific simulations
- Plugin systems

## Best Practices

- Minimize data transfer between JS and Wasm
- Use appropriate memory allocation strategies
- Consider linear memory model
- Profile performance critical paths

## Resources

- Official: webassembly.org
- MDN: Developer.mozilla.org/en-US/docs/WebAssembly