regex101: link

Regular Expression

src=['"]([http]+s?\S*)['"?] ?|href=['"]([http]+s?\S*)['"?] ?

New

<!DOCTYPE html>
<html lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<meta charset="utf-8">
<title>Font Awesome | Bootstrap Cheat Sheets</title>
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">

<link rel="shortcut icon" href="assets/img/favicon.ico" />

<link href='http://fonts.googleapis.com/css?family=Source+Sans+Pro:400,600,700,900,400italic,600italic,700italic|Varela+Round&subset=latin,latin-ext' rel='stylesheet' type='text/css'>
<script src="http://code.jquery.com/jquery-1.9.1.js"></script>
<script src="http://code.jquery.com/ui/1.10.3/jquery-ui.js"></script>
<script src="assets/js/jquery.quicksearch.min.js"></script>

<!-- Modernizr for simple touch detection -->

<script src="assets/js/modernizr-touchevents.js"></script>

<!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="http://netdna.bootstrapcdn.com/bootstrap/3.0.3/css/bootstrap.min.css">

<!-- Latest compiled and minified JavaScr

Extraction

<!DOCTYPE html>
<html lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<meta charset="utf-8">
<title>Font Awesome | Bootstrap Cheat Sheets</title>
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">

<link rel="shortcut icon" href="assets/img/favicon.ico" />

<link href='http://fonts.googleapis.com/css?family=Source+Sans+Pro:400,600,700,900,400italic,600italic,700italic|Varela+Round&subset=latin,latin-ext' rel='stylesheet' type='text/css'>
<script src="http://code.jquery.com/jquery-1.9.1.js"></script>
<script src="http://code.jquery.com/ui/1.10.3/jquery-ui.js"></script>
<script src="assets/js/jquery.quicksearch.min.js"></script>

<!-- Modernizr for simple touch detection -->

<script src="assets/js/modernizr-touchevents.js"></script>

<!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="http://netdna.bootstrapcdn.com/bootstrap/3.0.3/css/bootstrap.min.css">

<!-- Latest compiled and minified JavaScr