Validator Features

Advanced WebAssembly validation with real-time diagnostics, compliance checks, and optimization insights

Real-Time Validation

Instant syntax validation with context-aware error highlighting for both WAT and binary formats

WASI Compliance

Automated WebAssembly System Interface check with detailed compliance reports and fix suggestions

Optimization Linting

Performance analysis and optimization suggestions with memory and execution profiling

Flexible Validation Workflows

Validator CLI

Advanced command-line interface with full validation capabilities and JSON output generation.

validator validate myfile.wasm

📝 Accepts WAT

🔒 WASI Compliance

📈 Optimization

⚙️ JSON Output

Web Validator

Interactive web-based validator with real-time syntax checking and module visualization.

Interactive validation interface

Drag-and-drop file support
Instant error highlighting
Module graph visualization

Custom Rules

Define custom validation rules and constraints for your specific WebAssembly use cases

{
  "custom_limits": {
    "max_function_count": 200,
    "max_memory_pages": 128,
    "forbidden_exports": ["debug_log"]
  },
  "required_exports": ["_start", "_memory"]
}

API Integrations

Build custom validation workflows with HTTP API or Node.js module integrations.


// Node integration example
const validator = require('wasm-validator');
validator.validateFileSync('demo.wasm');
console.log(validator.getReport());

Validator in Action

Wasm Labs

"We integrated Validator into our pipeline and reduced deployment issues by 75%."

CEO of Wasm Labs, 2025

TechCorp

"The WASI compliance check saved us hours of debugging cross-platform inconsistencies."

CTO of TechCorp, 2025

GameDev Studios

"The optimization suggestions cut our Wasm module size by 40% instantly."

GameDev Studios Founder, 2025

Validator Tool Comparison

Feature	CLI Validator	Web Validator	Node API
WAT Validation	Yes	Yes	Yes
Binary Validation	Yes	Yes	Yes
WASI Compliance	Yes	Yes	Yes
Optimization Lint	Yes	Yes	Yes
Custom Rules	Yes	Yes	Yes
JSON Reports	Yes	Yes	Yes

WASM Validator