Marketers now need to review and update any creative they are running on Facebook as ads will be automatically cropped to meet the new aspect ratios.

Future creative will require more succinct copy – marketers have three lines to get their message across and entice users to click.

It’s not yet clear how Facebook – which has not commented on the changes – will count the clicks or enable retargeting of those that do click to expand text.

Social copywriters and creative asset managers can expect a busy few weeks.