Negative Reader

Finally you can read your e-books and e-textbooks in PDFs after dark without tiring your eyes.

Negative has three working modes:

  • Normal – no inverted colors. In this way, you can open documents to yourself, for example, in Preview on Mac
  • Inverted – here the colors are just reversed, everything is in reverse
  • Inverted with Sepia – the picture in the negative with the sepia added, which in my opinion further improves the comfort of reading in the dark.

Each of the modes is activated one after the other, like on a carousel, after next clicking on the button with the eye on the toolbar. On the toolbar you will also find a field for entering the page number to which you want to jump.

Negative for Mac is available on Mac App Store for free.

If you need to contact me concerning Negative you can find me on Twitter.


If you have any questions and issues with Negative Reader, please contact me.

Privacy Policy

Negative Reader doesn’t collect any user data or statistics. Krystian Kozerawski – creator and owner of Negative Reader – did not and will not sell or rent any personal information supplied by his customers, except as may be required by law. This includes contact information, such as names, emails, addresses or anything that you share with him during support interaction.

Updates to this policy

Krystian Kozerawski may update this privacy information as needed. The latest version will always appear on this page. If you have any questions about our privacy policy, please contact him.