Lay out the room.
Set out round tables of 4 to 14, long tables, a head table, a U-shape or classroom rows on a floor plan in metres or feet. Drag tables into position, turn them in 15 degree steps, and draw the doors, stage, bar, buffet and dance floor.
Put guests in seats.
Each guest's name sits on their seat. Pull a guest up from the tray onto a seat, or tap a guest and then a seat. Drop someone on a taken seat and the two swap. Press and hold a table to seat a whole group there at once.
See when a rule is broken.
Say who sits together, who sits apart, who needs a set table, a place in the front third of the room, a seat near a door or a wheelchair space. A guest sitting where a rule says they should not turns coral, and the Rules tab lists broken rules first.
Fill empty seats automatically.
Auto-fill tries to seat everyone left in the tray, keeps parties that must sit together side by side, and never breaks a rule to fill a seat. Anyone it cannot place stays in the tray, and it tells you whether a rule or a lack of seats is the reason.
Add your guest list.
Type guests in, paste a list from a message or a note ("Anna Berg" or "Berg, Anna"), or open a CSV from a wedding website or a spreadsheet. Add a group, a meal or dietary note and your own notes for each guest. Sort by last name or first name, and search.
Ready to print.
The seating chart on one landscape page, table lists with seat numbers and meal counts for the caterer, a find-your-seat board in alphabetical order, escort cards ten to a sheet and fold-over place cards four to a sheet, on A4 or Letter. The PDFs print names in other writing systems too.