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Xvibelabs

Posted on Originally published at xvibelabs.com

Why We Replaced Cloud Brotli Archive Sanitizer with Zero-Egress WebAssembly

In modern web development, countless daily utility tasks needlessly upload sensitive user data to unverified SaaS servers.

The Problem

When engineering teams format confidential JSON, inspect Brotli archives, or sanitize customer datasets, data exfiltration becomes a serious compliance hazard.

The Architecture

To eliminate this attack surface, Brotli Archive Sanitizer was architected around pure client-side execution:

  • Zero Cloud Ingestion: Computations execute entirely in local browser memory via WebAssembly.
  • Air-Gapped Operation: No background telemetry, no tracking pixels, zero analytics egress.
  • Micro-Engine: Instant sub-second response without subscription paywalls.

Live Browser Sandbox

You can verify the client-side execution and inspect memory isolation in the live sandbox:
👉 Open Brotli Archive Sanitizer Sandbox

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