Explainer ·
The Response That Arrives Before the Response
A server can tell the browser what to fetch before it has built the page. That head start lasts exactly as long as the server is slow, and on fast sites it is close to zero.
How the web actually works underneath the page
Most explanations of the web stop at the surface. These are notes on the layer below: how a page is assembled and delivered, what it can observe about you while it does, and where the cost is hidden.
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The Header That Carries Your Dark Mode
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Explainer ·
What Replaced the User-Agent String
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