About the Source Code Viewer
The Source Code Viewer fetches any page server-side and shows the raw HTML exactly as delivered — with status, redirects, size and line count. Perfect on mobile (no Ctrl+U there), for comparing server-rendered markup against the JavaScript-built DOM, or for grabbing markup to analyze with the Link Extractor or Meta Tag Analyzer.
Same source — but fetched server-side, so it also works on mobile, shows the size and headers at a glance, and gives you a one-click copy of the full markup.
This tool shows the raw HTML the server sends. DevTools "Elements" shows the live DOM after JavaScript ran — on JS-heavy sites the two can differ massively.
Pages are read up to 3 MB — more than enough for any HTML document; oversized responses are truncated and flagged.