What could be causing the issue of thumbnails appearing white while original images are correct in the PHP script provided?

The issue of thumbnails appearing white while original images are correct in the PHP script could be caused by incorrect image processing or resizing methods. To solve this issue, ensure that the image processing library being used supports the image format and quality settings. Additionally, check the resizing algorithm being used to generate thumbnails to ensure it maintains the image quality. 

// Example code snippet to generate thumbnails without losing image quality

// Load the original image
$originalImage = imagecreatefromjpeg('original.jpg');

// Get the dimensions of the original image
$originalWidth = imagesx($originalImage);
$originalHeight = imagesy($originalImage);

// Create a new image for the thumbnail
$thumbnailWidth = 100; // Set the desired width for the thumbnail
$thumbnailHeight = ($originalHeight / $originalWidth) * $thumbnailWidth;
$thumbnailImage = imagecreatetruecolor($thumbnailWidth, $thumbnailHeight);

// Resize the original image to create the thumbnail
imagecopyresampled($thumbnailImage, $originalImage, 0, 0, 0, 0, $thumbnailWidth, $thumbnailHeight, $originalWidth, $originalHeight);

// Output the thumbnail image
header('Content-Type: image/jpeg');
imagejpeg($thumbnailImage);

// Free up memory
imagedestroy($originalImage);
imagedestroy($thumbnailImage);

Keywords

image processing thumbnails PHP script white images image manipulation

Related Questions