Cargo Features

[dependencies]
libwebp-sys = { version = "0.11.0", default-features = false, features = ["std", "parallel", "neon", "sse41", "avx2"] }
default = parallel, std

These default features are set whenever libwebp-sys is added without default-features = false somewhere in the dependency tree.

std default
parallel build default

Enables parallel of cc

neon

ARM NEON SIMD (will crash on ARM CPUs without it)

sse41

x64 SSE 4.1 (will crash on x86 CPUs without it)

avx2

x64 AVX2 (will crash on x86 CPUs without it)