Are there any best practices or specific techniques recommended for maintaining image quality when resizing images using PHP?

When resizing images using PHP, it is important to maintain image quality to avoid distortion or blurriness. One common technique is to use the imagecopyresampled() function in PHP, which resamples the image to maintain quality. Additionally, using the correct image format (such as PNG or JPEG) can also help preserve image quality during resizing. 

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

// Set the dimensions for the resized image
$width = 200;
$height = 150;

// Create a new image with the desired dimensions
$destination = imagecreatetruecolor($width, $height);

// Resize the original image to the new dimensions while maintaining quality
imagecopyresampled($destination, $source, 0, 0, 0, 0, $width, $height, imagesx($source), imagesy($source));

// Save the resized image
imagejpeg($destination, 'resized.jpg');

// Free up memory
imagedestroy($source);
imagedestroy($destination);

Keywords

image resizing image quality PHP GD library image manipulation

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