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dropdown renders a collapsible dropdown menu. The user picks exactly one option. Functionally equivalent to single_select, but rendered as a dropdown — better for 7+ options or when vertical space is limited. For 2–6 options where you want all choices visible at once, use single_select instead. Submission value type: string (the selected value)

Field properties

PropertyTypeRequiredDescription
idstringYesUnique identifier within the form. Becomes the key in submission data.
type"dropdown"YesMust be dropdown.
labelstring | LocaleMapYesLabel shown above the dropdown.
optionsOption[]YesThe list of choices. See below.
searchablebooleanNoAdds a text filter inside the dropdown. Ideal for long option lists (countries, cities, etc.).
validatorsValidator[]NoValidation rules applied before the section is submitted.
visible_whenstringNoJS expression; field is shown when truthy, hidden otherwise. Hidden fields are excluded from submission data.

Options

Simple format — value and label are the same string:
options:
  - United States
  - United Kingdom
  - Canada
  - Australia
Structured format — explicit value stored; label displayed:
options:
  - value: us
    label: United States
  - value: gb
    label: United Kingdom
  - value: ca
    label: Canada
  - value: au
    label: Australia
Structured with LocaleMap — translated labels:
options:
  - value: us
    label:
      en: United States
      es: Estados Unidos
  - value: gb
    label:
      en: United Kingdom
      es: Reino Unido
The value is what gets stored in submission.data. The label is what the user sees.

Validators

required

An option must be selected.
validators:
  - required
Default error message: This field is required.
Validators run in the browser before each section is submitted. They enforce UX constraints, not security guarantees. If you need server-side validation, implement it in your webhook receiver.

Full example

A country selection dropdown with search enabled:
version: 1
title: Contact information
sections:
  - id: main
    title: Where are you based?
    fields:
      - id: full_name
        type: short_text
        label: Full name
        validators:
          - required
      - id: country
        type: dropdown
        label: Country
        searchable: true
        options:
          - value: us
            label: United States
          - value: gb
            label: United Kingdom
          - value: ca
            label: Canada
          - value: au
            label: Australia
          - value: de
            label: Germany
          - value: fr
            label: France
          - value: jp
            label: Japan
          - value: br
            label: Brazil
          - value: mx
            label: Mexico
          - value: in
            label: India
        validators:
          - required
    next: done