Start with distance
If people are far away, go larger before you add more copy.
Banner size guide
Banner size is really a placement decision. The right answer depends on where the banner goes, how far away people stand, and how much the design is trying to say.

If people are far away, go larger before you add more copy.
A banner should feel intentional in the space, not barely squeezed in.
Long copy often signals the banner is trying to do too much.
Best when the audience is close and the message is short.
The best starting size for most promotional, event, and storefront needs.
A better choice when the banner needs to carry more space or more distance.
A banner behind a check-in table is a different job than a banner stretched across a fence. Indoor backdrops can support more detail because people stand closer. Road-facing or parking-lot-facing banners need fewer words and more scale.
When in doubt, sketch the install area and decide whether the banner is meant to be read up close, across a room, or from passing traffic. That gives you a better answer than keyword-based guessing.
For many buyers, yes. It is large enough to feel substantial and flexible enough to fit storefronts, booths, events, and interior walls.
Choose a custom size when the install area has a specific dimension or when the standard presets leave too much dead space or feel cramped.
Ready to print
The fastest way to validate the choice is to upload the file and view the banner in the order flow.