Charcoal Faster utf8.Valid using multi-byte processing without SIMD. Features Fast. Up to 50% faster than the standard library. See the benchmarks section. Compatible. Its usage is the same as the standard library. Well-tested. Fuzzing is actively done in addition to standard library's tests. Installation go get github.com/sugawarayuuta/charcoal Benchmarks The left side is the standard library, the right side is this library (Higher is better). │ ./before.txt │ ./after.txt ...