What are the differences between outputting text on JPEG images and PNG images in PHP in terms of quality and clarity?

When outputting text on JPEG images in PHP, the text may appear blurry or pixelated due to the compression algorithm used by JPEG format. On the other hand, PNG images typically preserve text clarity and quality better than JPEG images. To improve text quality on JPEG images, consider using PNG format instead. 

// Create a new PNG image
$image = imagecreatetruecolor(400, 200);

// Set the background color
$bg_color = imagecolorallocate($image, 255, 255, 255);
imagefill($image, 0, 0, $bg_color);

// Set the text color
$text_color = imagecolorallocate($image, 0, 0, 0);

// Add text to the image
$text = "Hello, World!";
imagettftext($image, 20, 0, 10, 100, $text_color, 'arial.ttf', $text);

// Output the image as PNG
header('Content-type: image/png');
imagepng($image);

// Free up memory
imagedestroy($image);

Keywords

JPEG PNG image processing image quality PHP functions

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