Picture for article disable when reading

Have a picture in the list of article is a good idea , but in the list the picture is a square .

When we read the article , the picture is rectangular , it is difficult to have a good picture in square or in rectangular and somethimes we use a "general" image ,

an exemple , i create a article for photoshop , i use a square image with the photoshop logo in the article list but i don't want this image in square when i read the article , thus a checkbox for visible in reading article is perhaps a good solution

.articleImage {
    display:none;
}

I have add this code to css , to disable the picture in reading