<?php
if(isset($_POST['url']))
{
$image = $_POST['url'];
$pathinfo = pathinfo($image);
$image_name = $pathinfo['filename'].'.'.$pathinfo['extension'];
echo '<a download="'.$image_name.'" href="'.$image.'" title="ImageName">';
echo '<img src="'. $image.'">' ;
}
?>
<form name="download"...