Оптимизируйте изображение, используя скрипт при загрузке

попробуйте эту функцию я использую это в моей программе, она отлично работает

<?php
############ Configuration ##############
$thumb_square_size      = 200; //Thumbnails will be cropped to 200x200 pixels
$max_image_size         = 5000; //Maximum image size (height and width)
$thumb_prefix           = "thumb_"; //Normal thumb Prefix
$destination_folder     = 'uploads/'; //upload directory ends with / (slash)
$jpeg_quality           = 90; //jpeg quality
##########################################

//continue only if $_POST is set and it is a Ajax request
if(isset($_POST) && isset($_SERVER['HTTP_X_REQUESTED_WITH']) &&     strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) == 'xmlhttprequest'){

// check $_FILES['ImageFile'] not empty
if(!isset($_FILES['image_file']) || !is_uploaded_file($_FILES['image_file']    ['tmp_name'])){
die('Image file is Missing!'); // output error when above checks     fail.
}

//uploaded file info we need to proceed
$image_name = $_FILES['image_file']['name']; //file name
$image_size = $_FILES['image_file']['size']; //file size
$image_temp = $_FILES['image_file']['tmp_name']; //file temp

$image_size_info    = getimagesize($image_temp); //get image size

if($image_size_info){
$image_width        = $image_size_info[0]; //image width
$image_height       = $image_size_info[1]; //image height
$image_type         = $image_size_info['mime']; //image type
}else{
die("Make sure image file is valid!");
}

//switch statement below checks allowed image type
//as well as creates new image from given file
switch($image_type){
case 'image/png':
$image_res =  imagecreatefrompng($image_temp); break;
case 'image/gif':
$image_res =  imagecreatefromgif($image_temp); break;
case 'image/jpeg': case 'image/pjpeg':
$image_res = imagecreatefromjpeg($image_temp); break;
default:
$image_res = false;
}

if($image_res){
//Get file extension and name to construct new file name
$image_info = pathinfo($image_name);
$image_extension = strtolower($image_info["extension"]); //image extension
$image_name_only = strtolower($image_info["filename"]);//file name only, no     extension

//create a random name for new image (Eg: fileName_293749.jpg) ;
$new_file_name = $image_name_only. '_' .  rand(0, 9999999999) . '.' .     $image_extension;

//folder path to save resized images and thumbnails
$thumb_save_folder  = $destination_folder . $thumb_prefix .     $new_file_name;
$image_save_folder  = $destination_folder . $new_file_name;

//call normal_resize_image() function to proportionally resize image
if(normal_resize_image($image_res, $image_save_folder, $image_type,     $max_image_size, $image_width, $image_height, $jpeg_quality))
{
//call crop_image_square() function to create square thumbnails
if(!crop_image_square($image_res, $thumb_save_folder, $image_type,     $thumb_square_size, $image_width, $image_height, $jpeg_quality))
{
die('Error Creating thumbnail');
}

/* We have succesfully resized and created thumbnail image
We can now output image to user's browser or store information in     the database*/
echo '<div align="center">';
echo '<img src="uploads/'.$thumb_prefix . $new_file_name.'"     alt="Thumbnail">';
echo '<br />';
echo '<img src="uploads/'. $new_file_name.'" alt="Resized Image">';
echo '</div>';
}

imagedestroy($image_res); //freeup memory
}
}