Conditional visibility

Show or hide fields based on the visitor's answers to other fields on the same form. Hidden fields are also excluded from server-side validation, so a visitor never gets blocked by a required field they couldn't see.

Add a visibility rule

1. Open the form in the builder.
2. Click the field whose visibility you want to control.
3. In the field editor, open the Logic section and toggle Enable conditional logic.
4. Pick an action (Show / Hide), a match mode (All / Any), and add one or more rules.

Each rule has three parts:

• Field — the field whose value is being compared.
• Operator — see Operators below.
• Value — the value to compare against.

Operators

Operator	Meaning
equals	Value matches exactly
not_equals	Value does not match
contains	Value contains the substring
not_contains	Value does not contain the substring
greater_than	Numeric: greater than
less_than	Numeric: less than
is_empty	Field has no value
is_not_empty	Field has any value

Match modes

• All — every rule must be true for the action to apply.
• Any — any single rule being true is enough.

Example: show "Other" text field when "Other" is selected

1. On a Select field, add an option labelled "Other".
2. Add a Text field below it called "Please specify".
3. On the Text field, enable conditional logic with: action = Show, match = All, rule = your_select_field equals Other.

Now the "Please specify" field only appears when the visitor selects "Other".

How fields are referenced

Rules reference fields by a stable internal field key (e.g. fld_01J9K2P3QX…), not the field's name. That means renaming a field's HTML name will not break existing rules. Duplicating a field always produces a fresh key.

Behaviour on the frontend and server

• Frontend — visibility is evaluated live as the visitor types or selects. Hidden fields are not submitted.
• Server — submission validation skips hidden fields entirely. A required field that is hidden by a rule does not produce a validation error.