view.php

<?php
    $capture = filter_input(INPUT_GET, 'url', FILTER_SANITIZE_URL);
    $browser = new COM("InternetExplorer.Application");
    $handle = $browser->HWND;
    $browser->Visible = true;
    $browser->Fullscreen = true;
    $browser->Navigate("$capture");
    $idImg = rand();
    $img = "snap/iesnap-$idImg.png";
    while($browser->Busy){
        com_message_pump(1000);
    }

    $im = imagegrabwindow($handle, 0);
    $browser->Quit();
    imagepng($im, $img);
    imagedestroy($im);

    echo "<img src='thumb.php?src=$img&w=500&h=500' width='500' height='500' />";
?>