8 min read
What Happens When You Type a URL?
After you press Enter, the browser parses the address, checks cache, resolves DNS, opens HTTPS, requests HTML, and starts rendering.
Topic · 6 articles
What Happens When
A look inside the browser’s systems. Explore what really happens when you click, paste, upload, or scroll.
All articles — 6
8 min read
What Happens When a Web Page Loads
A page load turns a URL into bytes, then into DOM, CSSOM, layout, paint, and composited pixels. Scripts and styles decide what blocks the first view.
7 min read
What Happens When You Fetch Data in the Browser
Fetch builds a request, checks browser policy and cache, sends HTTP over the network, then exposes the response as headers and a body stream.
7 min read
What Happens When You Upload a File?
When you upload a file, the browser exposes only the selected file, packages it for the request, and sends the bytes over HTTPS.
8 min read
What Happens When You Download a File?
A browser download starts as an HTTP response, then becomes a temporary file, a progress entry, and finally a saved file after checks finish.
7 min read
What Happens When You Paste on a Web Page?
Pasting triggers a browser event that reads chosen clipboard formats, gives the page scoped access, and inserts or handles the content.