You can do better, without SIMD: https://github.com/powturbo/TurboBase64 https://github.com/powturbo/TurboBase64 The simple base64 scalar version is also faste

You can do better, without SIMD: https://github.com/powturbo/TurboBase64 https://github.com/powturbo/TurboBase64 The simple base64 scalar version is also faster the chromium implementation.