An event cover should help someone recognise the event and its tone. It does not need to reproduce every piece of information in a flyer. A clear photograph or illustration with a concise title is often easier to use than a wide design packed with dates, schedules, sponsors, terms, and tiny contact details.
This page uses our 1920×1005 pixel event-cover export. It is a working preset in this tool, not a claim that every Facebook event surface displays those exact pixels without cropping. Mobile previews, desktop event pages, and shared event cards can frame artwork differently. Keep the title or identifying subject near the central area and test the actual event editor before publishing.
Prepare the design in your editing application first. The compressor does not move a title, add a date, replace a sponsor logo, or create a background around a differently shaped poster. If the original is a tall flyer, make a separate wide design rather than assuming a crop can preserve everything. Keep the editable source, because an event date or venue may change after the first export.