SDCH is a shared dictionary compression mechanism developed by Google but not standardized. It's use in chrome is being discontinued. Intent to deprecate thread:!searchin/blink-dev/SDCH%7Csort:relevance/blink-dev/nQl0ORHy7sw/HNpR96sqAgAJ

Status in Chromium


Deprecated (tracking bug) in:

  • Chrome for desktop release 59
  • Chrome for Android release 59
  • Chrome for iOS release 59
  • Android WebView release 59

Consensus & Standardization

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

  • No signal
  • No signal
  • No signal
  • No signals


Last updated on 2020-11-09