In WebTransport, the serverCertificateHashes option allows the website to connect to a WebTransport server by authenticating the certificate against the expected certificate hash instead of using the Web public key infrastructure (PKI). This feature allows Web developers to connect to WebTransport servers that would normally find obtaining a publicly trusted certificate challenging, such as hosts that are not publically routable, or virtual machines that are ephemeral in nature.


Specification link

Specification currently under development in a Working Group

Status in Chromium


Enabled by default

Consensus & Standardization

After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.


Last updated on 2022-04-25