Have you struggled to read some of the text in images included in some posts.
I avoid putting in images that are too wide, but I put one in this post for you to experience the problem.
Simply zooming in with the Browser zoom function doesn't give you any more resolution, but there is a workaround.
Chrome users: Right click on the image and select Open Image in New Tab.
Firefox users: Right click on the image and select View Image.
Internet Explorer users: get Chrome of Firefox; seriously.
Then in the new tab, delete the last part of the name in the address bar, the part after the ? character.
For example in the above image, the name in the address bar is:
Delete the ?width=690&upscale=false then hit enter, now you have recovered a full resolution image.
Some other websites do this automatically when you double click on an embedded image. That would be a nice enhancement to this site.