How To Add Watermark In Image Using PHP?

In this tutorial, i will give you two examples of how to add a watermark in images using php. The first example we will take png image and add as watermark. The second example we will use jpg image and add as a watermark. we will use imagecreatefrompng(), imagesx(), imagesy(), getimagesize(), imagecopy(), imagepng(), imagedestroy(), imagecreatefromjpeg() and imagejpeg() functions for adding image to watermark.

So, let's see both examples.

Example 1: Using PNG Image

In First example, we will use png image and add watermark on it.

Let's copy below code and create index.php file.

index.php

<?php
header('content-type: image/png');
  
$sourceImage = 'demo.png';
$myWatermark = imagecreatefrompng('watermark_image.png');
  
$watermarkWidth = imagesx($myWatermark);
$watermarkHeight = imagesy($myWatermark);
  
$image = imagecreatefrompng($sourceImage);
$imageSize = getimagesize($sourceImage);
  
$wmX = $imageSize[0] - $watermarkWidth - 20;
$wmY = $imageSize[1] - $watermarkHeight - 20;
  
imagecopy($image, $myWatermark, $wmX, $wmY, 0, 0, $watermarkWidth, $watermarkHeight);
  
/*
-------- If you want to save image -------
imagepng($image, 'watermark_image_save.png'); 
*/
imagepng($image);
  
imagedestroy($image);
imagedestroy($myWatermark);
?>

Example 2: Using JPG Image

In First example, we will use jpg image and add watermark on it.

Let's copy below code and create index.php file.

index.php

<?php 
header('content-type: image/jpeg');
  
$sourceImage = 'demo2.jpg';
$myWatermark = imagecreatefromjpeg('watermark_image2.jpg');
  
$watermarkWidth = imagesx($myWatermark);
$watermarkHeight = imagesy($myWatermark);
  
$image = imagecreatefromjpeg($sourceImage);
$imageSize = getimagesize($sourceImage);
  
$wmX = $imageSize[0] - $watermarkWidth - 20;
$wmY = $imageSize[1] - $watermarkHeight - 20;
  
imagecopy($image, $myWatermark, $wmX, $wmY, 0, 0, $watermarkWidth, $watermarkHeight);
  
/*
-------- If you want to save image -------
imagejpeg($image, 'watermark_image_save.jpg'); 
*/
imagejpeg($image);
  
imagedestroy($image);
imagedestroy($myWatermark);
?>

I hope it can help you...