I am wanting to resize and add watermark to the uploaded image.
I am able to resize the image successfully but once I apply the watermark, the watermark has a black background rather than transparent.
$watermark_l = "source/watermark_l.png";
$size_wm_l = getimagesize($watermark_l);
$watermark_l = imagecreatefrompng($watermark_l);
$filename = "input/$gallery/$file";
header('Content-Type: image/jpeg');
list($width, $height) = getimagesize($filename);
$x_large = 2000;
$y_large = 1333;
$image_p = imagecreatetruecolor($x_large, $y_large);
$image = imagecreatefromjpeg($filename);
imagecopyresampled($image_p, $image, 0, 0, 0, 0, $x_large, $y_large, $width, $height);
imagecopy($image_p, $watermark_l, 0, 0, 0, 0, $size_wm_l[0], $size_wm_l[1]);
imagejpeg($image_p, "output/$gallery/2000x1333_$file", 100);
Try to enable alpha blending on images after ImageCreate's:
ImageAlphaBlending($watermark_l,true);
ImageAlphaBlending($image_p,true);
Here's a good example for adding watermark on images using PHP -
<?php
// Load the stamp and the photo to apply the watermark to
$stamp = imagecreatefrompng('stamp.png');
$im = imagecreatefromjpeg('photo.jpeg');
// Set the margins for the stamp and get the height/width of the stamp image
$marge_right = 10;
$marge_bottom = 10;
$sx = imagesx($stamp);
$sy = imagesy($stamp);
// Copy the stamp image onto our photo using the margin offsets and the photo
// width to calculate positioning of the stamp.
imagecopy($im, $stamp, imagesx($im) - $sx - $marge_right, imagesy($im) - $sy - $marge_bottom, 0, 0, imagesx($stamp), imagesy($stamp));
// Output and free memory
header('Content-type: image/png');
imagepng($im);
imagedestroy($im);
?>
Source - http://php.net/manual/en/image.examples-watermark.php
Related
I need a way to add a watermark to the center of the external image ( from another domain ) and then store it in my filesystem.
This is my code:
$stamp = imagecreatefrompng('centerbutton.png');
$im = imagecreatefromjpeg( 'https://www.cleverfiles.com/howto/wp-content/uploads/2016/08/mini.jpg' );
// Set the margins for the stamp and get the height/width of the stamp image
$marge_right = 10;
$marge_bottom = 10;
$sx = imagesx($stamp);
$sy = imagesy($stamp);
$imgx = imagesx($im);
$imgy = imagesy($im);
$centerX=round($imgx/2);
$centerY=round($imgy/2);
// Copy the stamp image onto our photo using the margin offsets and the photo
// width to calculate positioning of the stamp.
imagecopy($im, $stamp, $centerX, $centerY, 0, 0, imagesx($stamp), imagesy($stamp));
// Output and free memory
imagejpeg($im,"img/newimage.jpg");
imagedestroy($im);
The problem is that it store nothing.
Why ?
I am trying to create watermark on images programmatically in PHP. Images are uploaded by users and they can be of different dimensions. What I am doing to create a watermark is this:
$stamp = imagecreatefrompng('stamp381x387.png');
$ext = substr(strrchr($_GET['src'], '.'), 1);
if ($ext == 'png') {
$im = imagecreatefrompng($_GET['src']);
} else if ($ext == 'jpg') {
$im = imagecreatefromjpeg($_GET['src']);
}
// Set the margins for the stamp and get the height/width of the stamp image
$marge_right = 0;
$marge_bottom = 0;
$sx = imagesx($stamp); //width
$sy = imagesy($stamp); //height
// Copy the stamp image onto our photo using the margin offsets and the photo
// width to calculate positioning of the stamp.
imagecopy($im, $stamp, (imagesx($im) - $sx ) / 2, (imagesy($im) - $sy) / 2, 0, 0, imagesx($stamp), imagesy($stamp));
// Output and free memory
if ($ext == 'png') {
header('Content-type: image/png');
imagejpeg($im);
imagedestroy($im);
} else if ($ext == 'jpg') {
header('Content-type: image/jpeg');
imagejpeg($im);
imagedestroy($im);
}
Now, it creates water mark on images but those are not uniform. See attached Images.
How to make it uniform on all images? any help?
imagecopy($im, $stamp, imagesx($im) - $sx - $marge_right, imagesy($im) - $sy - $marge_bottom, 0, 0, imagesx($stamp), imagesy($stamp));
Here's a good example for adding watermark on images using PHP -
http://php.net/manual/en/image.examples-watermark.php
I am adding a line of text onto an image. Is it possible to overlay multiple lines (line2.png & line3.png) onto the same image?
$stamp = imagecreatefrompng('img/line1.png');
$im = imagecreatefromjpeg('tom.jpg');
// Set the margins for the stamp and get the height/width of the stamp image
$marge_right = 10;
$marge_bottom = 40;
$sx = imagesx($stamp);
$sy = imagesy($stamp);
// Copy the stamp image onto our photo using the margin offsets and the photo
// width to calculate positioning of the stamp.
imagecopy($im, $stamp, imagesx($im) - $sx - $marge_right, imagesy($im) - $sy - $marge_bottom, 0, 0, imagesx($stamp), imagesy($stamp));
// Output and free memory
header('Content-type: image/png');
imagepng($im);
imagedestroy($im);
Yes, you can by using imagecopy.
Typical usage:
$copyimage = imagecreatefromjpeg("path/to/image/you/want/to/put/into/an/image.jpg");
//$copyimage just needs to be a GD object, so you can also use imagecreatefrompng etc.
imagecopy($image, $copyimage, $position_x,
$position_y, 0, 0, $image_width, $image_height);
http://php.net/imagecopy
How can i apply a watermark onto an image with rotation and opacity using imagick in php
this is my code
<?php
$image = new Imagick();
$image->readImage(realpath('C:\xampp\htdocs\imagick\3.jpg'));
$watermark = new Imagick();
$watermark->readImage(realpath('C:\xampp\htdocs\imagick\1.png'));
$image->compositeImage($watermark, imagick::COMPOSITE_OVER, 0, 0);
header("Content-Type: image/" . $image->getImageFormat());
echo $image;
?>
Get your watermark image and the image you want to add it to .
Them merge them using PHP ImageCopy function
<?php
// Load the stamp and the photo to apply the watermark to
$watermark= imagecreatefrompng('stamp.png');
$im = imagecreatefromjpeg('photo.jpeg');
// Set the margins for the stamp and get the height/width of the stamp image
$marge_right = 10;
$marge_bottom = 10;
$sx = imagesx($watermark);
$sy = imagesy($watermark);
// Copy the stamp image onto our photo using the margin offsets and the photo
// width to calculate positioning of the stamp.
imagecopy($im, $watermark, imagesx($im) - $sx - $marge_right, imagesy($im) - $sy - $marge_bottom, 0, 0, imagesx($watermark), imagesy($watermark));
// Output and free memory
header('Content-type: image/png');
imagepng($im);
imagedestroy($im);
?>
Should do the trick..
In your example you are only missing the rotate image.
$imagick->rotateImage(new ImagickPixel('transparent'), -13.55);
Imagick.rotateImage
So I am watermarking the png image on Gif image.here is my code :
<?php
// Load the stamp and the photo to apply the watermark to
$stamp = imagecreatefrompng('add_item.png');// watermark image
$im = imagecreatefromjpeg('gif_image.gif');// source image
$image_path = "/opt/lampp/htdocs/my/Harshal/watermarking/".time().".png";
$marge_right = 10;
$marge_bottom = 10;
$sx = imagesx($stamp);
$sy = imagesy($stamp);
// Copy the stamp image onto our photo using the margin offsets and the photo
// width to calculate positioning of the stamp.
imagecopy($im, $stamp, imagesx($im) - $sx - $marge_right, imagesy($im) - $sy - $marge_bottom, 0, 0, imagesx($stamp), imagesy($stamp));
// Output and free memory
//header('Content-type: image/png');
imagepng($im,$image_path);
imagedestroy($im);
?>
My code is working fine and its watermarking the png image on gif image but The problem is :
There is white background coming just behind of the watermark png image and not the transparent as comes for other images.
Can you guys tell me why only gif image have issues ?
See the generated image.
I know Gif is the combinations of many images but is there any solution that we can put the image with normal behavior.?
I saw some Online watermarking tools also but they have also same issue.
You can convert the gif to a true color image. Try this:
<?php
// Load the stamp and the photo to apply the watermark to
$stamp = imagecreatefrompng('add_item.png');// watermark image
$im = imagecreatefromgif('gif_image.gif');// source image
$image_path = "/opt/lampp/htdocs/my/Harshal/watermarking/".time().".png";
$marge_right = 10;
$marge_bottom = 10;
$sx = imagesx($stamp);
$sy = imagesy($stamp);
// Convert gif to a true color image
$tmp = imagecreatetruecolor(imagesx($im), imagesy($im));
$bg = imagecolorallocate($tmp, 255, 255, 255);
imagefill($tmp, 0, 0, $bg);
imagecopy($tmp, $im, 0, 0, 0, 0, imagesx($im), imagesy($im));
$im = $tmp;
// Copy the stamp image onto our photo using the margin offsets and the photo
// width to calculate positioning of the stamp.
imagecopy($im, $stamp, imagesx($im) - $sx - $marge_right, imagesy($im) - $sy - $marge_bottom, 0, 0, imagesx($stamp), imagesy($stamp));
// Output and free memory
//header('Content-type: image/png');
imagepng($im,$image_path);
imagedestroy($im);