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The Save-Data request header: https://developers.google.com/web/fundamentals/performance/optimizing-content-efficiency/save-data https://developers.google.com/w
by paulirish 7y ago
The Save-Data request header: https://developers.google.com/web/fundamentals/performance/optimizing-content-efficiency/save-data https://developers.google.com/web/fundamentals/performance/o...
And in the client, the NetInfo API: https://wicg.github.io/netinfo/ https://wicg.github.io/netinfo/