Client Hints is a draft standard (currently supported in Chromium browsers) that allows servers to request some details like viewport-width. https://developers

Client Hints is a draft standard (currently supported in Chromium browsers) that allows servers to request some details like viewport-width. https://developers.google.com/web/fundamentals/performance/optimizing-content-efficiency/client-hints https://developers.google.com/web/fundamentals/performance/o... * I work at Google but not on Chrome