Bookly Custom Fields is a handy add-on for the Bookly appointment-booking plugin, letting you collect extra information from clients right at the time of booking. It's perfect for salon owners, therapists, and service businesses who need more than just a name and email. You can add text fields, dropdowns, checkboxes, and file uploads to your booking forms, then sync that data directly with your Bookly Pro records for a cleaner, more personalised client management experience.