Yes - the preview is a visual representation of how your document will appear in print.
Please use the previewer to check the margins, borders, page order and binding edge etc.
We recommend checking for typos and spelling mistakes prior to upload, as the document will be easier to view in your own PDF viewer.
Please also note that depending on your browser or device, your document may appear slightly blurry in the previewer.
However if your file looks hi-res when viewed at 100%+ zoom on your PC prior to upload (e.g. when you view it using Adobe Reader), it will be printed in line with this.
If you have images, please ensure they are at least 300 dpi.