PHP | imagejpeg() Function

The imagejpeg() function is an inbuilt function in PHP which is used to display image to browser or file. The main use of this function is to view an image in the browser, convert any other image type to JPEG and altering the quality of the image.

Syntax:

bool imagejpeg( resource $image, int $to, int $quality )

Parameters: This function accepts three parameters as mentioned above and described below:

• $image: It specifies the image resource to work on.
• $to (Optional): It specifies the path to save the file to.
• $quality (Optional): It specifies the quality of the image.

Return Value: This function returns TRUE on success or FALSE on error.

Below examples illustrate the imagejpeg() function in PHP:

Example 1: In this example we will be viewing an image in browser.

<?php

// Load an image from jpeg URL
$im = imagecreatefromjpeg(
'https://media.geeksforgeeks.org/wp-content/uploads/20200123100652/geeksforgeeks12.jpg');

// View the loaded image in browser using imagejpeg() function
header('Content-type: image/jpg');
imagejpeg($im);
imagedestroy($im);
?>

Output:

Example 2: In this example we will convert PNG into JPEG.

<?php

// Load an image from PNG URL
$im = imagecreatefrompng(
'https://media.geeksforgeeks.org/wp-content/uploads/geeksforgeeks-13.png');

// Convert the image into JPEG using imagejpeg() function
imagejpeg($im, 'converted.jpg');
imagedestroy($im);
?>

Output:

This will save the JPEG version of image
in the same folder where your PHP script is.

Example 3: In this example we will alter the quality of the image.

<?php

// Load an image from jpeg URL
$im = imagecreatefromjpeg(
'https://media.geeksforgeeks.org/wp-content/uploads/20200123100652/geeksforgeeks12.jpg');

// View the loaded image in browser using imagejpeg() function
header('Content-type: image/jpg');
// Decrease the quality of image to 2
imagejpeg($im, null, 2);
imagedestroy($im);
?>

Output:

Reference: https://www.php.net/manual/en/function.imagejpeg.php