Form design

Inline form validation checks answers as people fill in a form. When it helps, when it annoys, input

Which required field indicator works best: an asterisk, the word required, or marking optional fields instead. A rule

Dropdown vs radio buttons: a simple rule by number of choices, when checkboxes or picture cards work better,

Write form error messages that say what went wrong and how to fix it, in plain words, next

How many form fields is right? A field-by-field test, typical numbers for contact, quote and booking forms, and

Form labels vs placeholders: why a label above the field should always be there, what placeholders are good

Make mobile friendly forms people can fill in with one thumb: the right keyboards, big tap targets, one

Twelve form design best practices that make forms quicker to fill in: labels, layout, fields, buttons, errors and

Accessible forms work for people using screen readers, keyboards and phones. Labels, errors, contrast and focus, explained with

Conversational forms show one question at a time, large and centered, so long forms feel short. When they