1. The HTTP Response Structure
Example
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HTTP/1.1 200 OK
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Content-Type: text/html; charset=utf-8
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Content-Length: 1250
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Date: Sun, 13 Sep 2026 15:31:43 GMT
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<title>Response Demo</title>
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</head>
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<body>
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<h1>My First Heading</h1>
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<p>My first paragraph.</p>
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</body>
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</html>
2. Inspecting Response Headers in Chrome DevTools
3. Inspecting HTTP 200 OK via curl.exe
⊞Administrator: Windows 11 Command Prompt (cmd.exe)
>curl.exe -I https://nextsem.online/
⊞Windows 11 Execution OutputReal PC Match
Microsoft Windows [Version 10.0.22631.3007] (Windows 11 Pro x86_64)
(c) Microsoft Corporation. All rights reserved.
HTTP/1.1 200 OK
Connection: keep-alive
Content-Length: 58129
Cache-Control: max-age=3600
Content-Type: text/html; charset=utf-8
Etag: "4b2a58c512e5c9776fe87f1ba1c4b5268cc3833e7d1374d604ea55ccc45600ec"
Strict-Transport-Security: max-age=31556926
Accept-Ranges: bytes
Date: Sun, 13 Sep 2026 15:29:27 GMT
X-Cache: HIT