Windows 10: Does the built-in window photo app reduce the quality of original photo?

My original photo is very clear and high resolution. However, it is a little bit dark, so I open the Windows Photo app to make it brighter and save a copy. When I take a look at the copied one the brighter one, I do not see any sign of quality reduction, but I wonder if the photo truly keeps the original quality or if it is reduced a little bit, but normal eyes cannot see the difference.

:)

 

Windows 10 Photos video project export quality issue

In Windows 10 I created a video project slideshow with the photos app. I'd like to export this video for a Facebook ad. However, the photos app only gives me 3 options to export and all three significantly reduce the quality of the video versus when I
just view it in the app. Any suggestions how to export and maintain quality?

 

edit photos-how to keep original quality of edited photo

Original title: edit photos

edited photos resize resolution in save. how to keep original quality of edited photo?

 

The 'Photos' app for photo viewing has disappeared.

I do not understand this, when I returned to the PC later today my original settings had returned to the start screen, including one other tile which I had also lost but had not yet re-instated. Also the original list of 'All apps' had returned to the start
screen, including 'Photos'. There is nothing that I am aware of having done that should have caused the original disappearance of some apps from the 'All apps' list and their associated tiles, or that could have caused them to return.

It has therefore been unnecessary to follow your suggested steps, though I have done so anyway and it works as suggested. Note that I had followed your steps 1 & 2 earlier which is why I knew 'Photos' had not disappeared from the PC but was simply not
visible on the 'All apps' list and hence my inability to re-pin the tile.

Thank you for your reply and understanding my frustration.