#serde #serialization #no-std

no-std cs_serde_bytes

Optimized handling of &[u8] and Vec<u8> for Serde

1 unstable release

0.12.0 Dec 3, 2020

#491 in Encoding

Download history 114/week @ 2021-04-11 174/week @ 2021-04-18 193/week @ 2021-04-25 133/week @ 2021-05-02 67/week @ 2021-05-09 121/week @ 2021-05-16 128/week @ 2021-05-23 164/week @ 2021-05-30 168/week @ 2021-06-06 198/week @ 2021-06-13 135/week @ 2021-06-20 182/week @ 2021-06-27 189/week @ 2021-07-04 264/week @ 2021-07-11 180/week @ 2021-07-18 49/week @ 2021-07-25

561 downloads per month
Used in 16 crates (5 directly)


608 lines

serde_bytes Build Status Latest Version

Wrapper types to enable optimized handling of &[u8] and Vec<u8>.

serde_bytes = "0.11"


Without specialization, Rust forces Serde to treat &[u8] just like any other slice and Vec<u8> just like any other vector. In reality this particular slice and vector can often be serialized and deserialized in a more efficient, compact representation in many formats.

When working with such a format, you can opt into specialized handling of &[u8] by wrapping it in serde_bytes::Bytes and Vec<u8> by wrapping it in serde_bytes::ByteBuf.

Additionally this crate supports the Serde with attribute to enable efficient handling of &[u8] and Vec<u8> in structs without needing a wrapper type.


use serde::{Deserialize, Serialize};

#[derive(Deserialize, Serialize)]
struct Efficient<'a> {
    #[serde(with = "serde_bytes")]
    bytes: &'a [u8],

    #[serde(with = "serde_bytes")]
    byte_buf: Vec<u8>,


Licensed under either of Apache License, Version 2.0 or MIT license at your option.
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in this crate by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.