A white page on a bright screen in a dark room is hard on the eyes, and many PDF readers have no dark mode. This makes one into the file itself: the paper becomes near-black and the text light gray.
Dark mode tries to keep colored pictures and charts recognisable. Plain negative flips everything, the way a photo negative does. Either way, pages are saved as images, so the text can no longer be selected or searched.
How to use the PDF Dark Mode tool
- Add your PDF.
- Choose dark mode or plain negative, and the sharpness.
- Press Convert and download the dark PDF.
Popular uses
- Reading papers and e-books at night on a tablet
- Saving battery on OLED screens
- Reducing glare when presenting in a dark room
Tips for the best result
- Keep the original for printing and for searching.
- High sharpness is worth it for small print; standard is fine for books.
Quick facts
| Price | Free |
|---|---|
| Works with | |
| Where it runs | In your browser, on your device |
| Account | Not needed |