HTML Basics
Beginner
Understanding the structure of an HTML document
A walkthrough of doctype, head, body and semantic tags — the skeleton every web page is built on.
See the HTML behind any website
Type a URL above and press View HTML. The page's source code will appear here instantly — with syntax highlighting, copy and download.
example.com
news.ycombinator.com
wikipedia.org
Instant fetch
Multiple CORS proxies and your own API fallback ensure the source loads reliably.
Copy & download
Grab the raw HTML to your clipboard or save it as a .html file in one click.
Syntax highlighted
Tags, attributes, strings and comments are colour-coded for easy reading.
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From the blog
Web dev tips & tutorialsDevTools
Tools
How to inspect and view page source in any browser
Chrome DevTools, Firefox Inspector and Safari Web Inspector explained — plus keyboard shortcuts that save hours.
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CORS
Networking
What is CORS and why do browsers block cross-origin requests?
A plain-English explanation of the same-origin policy and how proxies help developers fetch external pages safely.
Performance
Optimisation
10 ways to make your web pages load faster
From minimising CSS to lazy-loading images — practical, copy-paste tips that genuinely move the needle.
Semantics
HTML5
Semantic HTML: why
Semantic HTML: why and beat
Better accessibility, SEO and maintainability — here's why semantic tags matter and how to use them right.
Better accessibility, SEO and maintainability — here's why semantic tags matter and how to use them right.
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