Codepad Viper Remote Image Viewer - http://codepad.viper-7.com/lNRGXC/55dev?

lNRGXC.php

<?php
/**
 * Codepad Viper Remote Image Viewer
 */

$url = 'http://i.stack.imgur.com/Pa9s3.png';

if (isset($_GET['g'])) $url = $_GET['g'];
  	
echo '<table border="1"><tr><th colspan="3"><a href="', htmlspecialchars($url), '">', htmlspecialchars($url), '</a></th></tr>';
	
echo '<tr><td colspan="3" align="center">', '<form method="get" action=""><input name="g" size="120" value="',htmlspecialchars($url), '"><input type="submit"></form>', '</td></tr>';
	
echo '<tr><td><img src="', htmlspecialchars($url), '"></td><td valign="top">';

$result = getimagesize($url);

echo '<pre>', print_r($result, 1), '</pre></td><td valign="top">';

echo '<pre>', print_r($http_response_header, 1), '</pre>';

echo '</td></tr></table>';