Delete a Message
Better to keep them at 100% 
(or 150 in case of very small pictures, e.g. those that are less than 500-550px wide)
(or 150 in case of very small pictures, e.g. those that are less than 500-550px wide) (or 150 in case of very small pictures, e.g. those that are less than 500-550px wide)