It will look and feel identical to the original, just much smaller. Optimized files stay in the same format, e.g. You can optimize and automatically attach them to a new email by selecting the files and clicking “Optimize and email” in the finder menu. If you’re planning to email your files then we’ve made it even easier. It is especially effective on files that don’t zip well. NXPowerLite will compress PDF, JPEG, Microsoft PowerPoint and Word files simply and effectively, making them easy to email as attachments.