We have a really good FAQ on posting pictures, two of them stickied to the top of the section
https://www.quiltingboard.com/qb-help-center-f27/
With my combination of a less common browser and tons of virus protections, what I see is not the same as the screen shots. I also have an older digital camera and the software with it (has been updated) isn't all that great. I found for me the easiest thing is to use this website which is very limited but very easy and doesn't set off my browser protections to reduce the size of the files.
https://www.reduceimages.com/
For people with phones, there is usually some sort of "share" option -- that works for most people, send it to yourself as an email.