@manteiga-planta I tried to look some up, because the ones i sent were from "Classroom" were i have my classes things. But I realized that when i search a PDF on Opera it has good quality, same as Chrome. But it still has some problem because the PDF's in my "Classroom" have lower quality on Opera than on Chrome.

@burnout426 Im so sorry i wasted your time, it was a configuration i had on, wich opera was trying to make the images quality better. Thank you for you time!

@manteiga-planta I tried to look some up, because the ones i sent were from "Classroom" were i have my classes things. But I realized that when i search a PDF on Opera it has good quality, same as Chrome. But it still has some problem because the PDF's in my "Classroom" have lower quality on Opera than on Chrome.

@leocg Yes, I do. Here are the examples from opera and chrome.

@leocg Then why does the PDF'S show with so low quality?

The PDF viewer in Opera significantly reduces the quality of PDFs. The same files looks sharp in Chrome and Acrobat, but appears pixelated in Opera. It would be great if you could improve the PDF rendering engine or add an option where we could choose to display high-quality PDFs.