Attachment Type

When resizing images for attachment, the reduction in file size while keeping the same dimensions is due to compression and quality settings.

Why Does File Size Reduce?

• Compression During Saving: JPEG compression removes some image data to reduce size.
• Default Quality Setting: The function uses a default quality setting (usually around 75) to optimize file size.
• No Resizing in WxH: The image retains its dimensions but is recompressed to a smaller file size.

Code Example for Resizing in PHP

imagejpeg($resizedImage, 'resized.jpg', 75); // Default quality
        

This method ensures quality preservation while reducing file size.