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simdutf simdutf Public

Unicode routines (UTF8, UTF16, UTF32) and Base64: billions of characters per second using SSE2, AVX2, NEON, AVX-512, RISC-V Vector Extension, LoongArch64, POWER. Part of Node.js, WebKit/Safari, Lad…

C++ 2k 164
is_utf8 is_utf8 Public

Fast C++ function "is_utf8": checks if the input is valid UTF-8. Made of a single source file. Optimized for ARM NEON, x64 SSE, AVX2 and AVX-512.

C++ 72 9
SimdUnicode SimdUnicode Public

Fast SIMD-based UTF-8 Validation in C#

C# 57 7
SimdBase64 SimdBase64 Public

Fast WHATWG forgiving-base64 decoding in C#

C# 47 1

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simdutf Public
Unicode routines (UTF8, UTF16, UTF32) and Base64: billions of characters per second using SSE2, AVX2, NEON, AVX-512, RISC-V Vector Extension, LoongArch64, POWER. Part of Node.js, WebKit/Safari, Ladybird, Chromium, Cloudflare Workers, Ghostty and Bun.

simdutf/simdutf's past year of commit activity

C++ 2,022 Apache-2.0 164 29 (5 issues need help) 25 Updated Nov 10, 2026
fastpybase64 Public
Fast Base64 encoding and decoding for Python, built on simdutf

simdutf/fastpybase64's past year of commit activity

C++ 16 Apache-2.0 1 0 1 Updated Oct 31, 2026
SimdBase64 Public
Fast WHATWG forgiving-base64 decoding in C#

simdutf/SimdBase64's past year of commit activity

C# 47 MIT 1 0 0 Updated Oct 16, 2026
SimdUnicode Public
Fast SIMD-based UTF-8 Validation in C#

simdutf/SimdUnicode's past year of commit activity

C# 57 MIT 7 2 0 Updated Sep 26, 2026
is_utf8 Public
Fast C++ function "is_utf8": checks if the input is valid UTF-8. Made of a single source file. Optimized for ARM NEON, x64 SSE, AVX2 and AVX-512.

simdutf/is_utf8's past year of commit activity

C++ 72 Apache-2.0 9 1 0 Updated Apr 22, 2026
browserbase64 Public
In-browser base64 benchmarks

simdutf/browserbase64's past year of commit activity

HTML 0 0 0 0 Updated Dec 22, 2025
base64jsbench Public
Node.js/bun base64 benchmark

simdutf/base64jsbench's past year of commit activity

JavaScript 1 0 0 0 Updated Nov 29, 2025
benchmark-results Public
Collection of simdutf benchmark results from various machines

simdutf/benchmark-results's past year of commit activity

1 0 0 0 Updated Apr 25, 2025
simdutf-vcpkg Public
Using simdutf with vcpkg

simdutf/simdutf-vcpkg's past year of commit activity

CMake 2 0 0 0 Updated Oct 10, 2024

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avx-512 avx2 neon simd unicode