Note that PDF, JPG, DOCX, PPTX, XLSX (office) are already supported.
The original screen is extremely bright, a real mirror, and reflections are very tiring.
Do not hesitate to invest in a MAT screen protector film, and easy to install.
This protects the screen and makes the matt display, without altering the brightness and colors.
I did not observe any "color leaking" or "contrast with greyish black" as cited on various forums.
The display is very good, and the small text still very legible.
At 250 euros, which I added about 40 euros of essential accessories:
OTG cable, USB powered hub, leather case, SlimPort adapter, screen protector film Mat
this tablet proves a very good value for money.