Charcoal – Faster utf8.Valid using multi-byte processing without SIMD

In plain words

Charcoal is a UTF-8 validation library that uses multi-byte processing to improve performance without relying on SIMD instructions. It's designed for developers who need to validate UTF-8 encoded text efficiently across different hardware platforms. The tool stands out by achieving faster validation speeds through algorithmic optimization rather than specialized processor features, making it practical for systems where SIMD support may be unavailable or inconsistent.

written from the facts on this page · September 2026

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