How does the imagetruecolortopalette function in PHP affect the quality and size of images created with indexed color palettes?

The imagetruecolortopalette function in PHP reduces the quality of images by converting them from true color to a palette-based image with indexed colors. This can result in a loss of detail and color accuracy in the image. However, it can also significantly reduce the file size of the image, making it more suitable for web use where smaller file sizes are preferred. 

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

// Convert the image to a palette-based image with indexed colors
imagetruecolortopalette($originalImage, false, 256);

// Save the modified image
imagejpeg($originalImage, 'indexed.jpg');

// Free up memory
imagedestroy($originalImage);

Keywords

imagetruecolortopalette PHP indexed color palettes quality size

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