Optimized vs high-quality vs enhanced PDFs

Learn about the pros and cons of the optimized, high-quality or enhanced versions of PDF flipbooks.

Having a high-quality flipbook in which you can clearly see images and read texts is important. At the same time, it’s also important to have a “light" flipbook that will load up quickly on the page. So how can you balance these two? 

Should you choose a high-quality PDF or an optimized version in your flipbook?
There’s no universally correct answer - it depends on what you want and the quality of your PDF. 

We’ll help you make an informed decision by explaining each option’s pros and cons and teaching you how to find this option in case you want to change the default “optimized" version. 

PDF quality options explained
  • Optimized PDF

This is the default setting for all uploaded PDFs because it perfectly balances speed with quality. The optimization happens right before we convert your file from the PDF format to HTML5 flipbook, and it happens really fast in the background (even faster than in the past), in a matter of seconds. Here is some great news: the optimization produces better results now than it did in the past - you'll get more details and higher definition. 

This is a great solution for most PDFs, regardless of the number of pages, file size, or DPI resolution.

The conversion will happen quickly, and the pages of your flipbook will also load very quickly if you choose this option. Certainly, you don't want your readers or customers to leave your HTML5 flipbook because the pages are loading slowly. 

The optimization level is different for different PDF files, and it depends on the quality of the uploaded file. If your uploaded file is small in size and contains less than 150 DPIs, then no further optimizations will happen on Flipsnack, regardless of the quality setting. 

You can see various comparison results below, on zoom, for 2 different PDF files:
A4, 72DPI PDF:

flipsnack high quality example 72DPIA4, 300DPI PDF:
flipsnack high quality example 300DPI


  • High-quality PDF

If your uploaded PDF is low-quality (less than 150 DPI) you shouldn't use the high-quality setting because it will not produce better results. 

Here's what happens when you choose the high-quality option:

We'll use your original uploaded file to create a high-quality output that is up to double in size compared to the optimized version. This means that you can zoom in deeper (2x deeper) on a high-quality flipbook than on an optimized version of the same flipbook. This is why the difference between the 2 quality settings is going to be even more obvious on zoom-in, where you can usually notice the finer details on the page.

We recommend using the high-quality setting if you have a large, high-quality PDF, if having crispy-clear texts is super important, and if you don't care that much about loading speed. 

  • Enhanced

With this option, you get access to an innovative converter to have the best quality and speed for your PDFs. It basically combines the two best parts of each option mentioned before to give you the best user experience in the conversion process.

You can enable this type of convert option by going to the main dashboard, then Settings, and clicking on General. You’ll see it right there, on the bottom side of the screen.

How to switch PDF quality from "optimized" to "enhanced"

It couldn't be easier. This option is available for everyone who has an account on Flipsnack. After you log in, please go to the main dashboard, click on Settings, and then on General

flipsnack general settings convert quality options

Does changing the setting affect my already converted flipbooks?

No, it does not. Any change in the quality setting will not affect any of the already uploaded PDFs. The change will not be retroactive, so it will only affect new uploads until you decide you want to switch again.

You can do that if you want to re-upload the PDF with a different quality setting.