View-sourcehttps | M.facebook.com Home.php [work]
Using the view-source: browser prefix on ://facebook.com reveals the raw, heavily minified HTML and React-based frontend code for Facebook's mobile experience. While it exposes the structure of the site, this view-only technique does not reveal server-side algorithms or private data. For a demonstration of viewing source code on mobile devices, see this tutorial on YouTube .
The presence of home.php hints at Facebook's server-side infrastructure. Facebook was built on PHP. While they have evolved the language into and developed the HHVM (HipHop Virtual Machine) to compile PHP code into machine language for speed, the mobile site often retains the structural artifacts of PHP. The raw source you see is the output of these PHP scripts—the HTML generated server-side before it reaches your browser. View-sourcehttps M.facebook.com Home.php
The malformed keyword "View-sourcehttps M.facebook.com Home.php" might look like a simple mistake, but understanding its intended meaning unlocks a deeper comprehension of: Using the view-source: browser prefix on ://facebook
Below is a long-form, technical article aimed at developers, security researchers, and curious users. The presence of home
home.php is a legacy PHP script that serves the main news feed (Home) on the mobile subdomain. While Facebook has migrated much of its backend to Hack (a PHP derivative) and GraphQL, the home.php endpoint remains a critical entry point for users with older browsers, slow connections, or those who disable JavaScript.
<!DOCTYPE html> <html lang="en" id="facebook" class="nojs svg"> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=yes"> <title>Facebook</title> <meta name="robots" content="noindex, nofollow">
without being logged in will likely redirect to a login page. The source will then show the login interface HTML, not the actual news feed.