## Forms

* Keep forms as short as practical.
* Ask only for information that is actually required.
* Group related fields together.
* Use clear field labels.
* Do not rely on placeholders as the only label.
* Use appropriate input controls for the expected value.
* Provide useful defaults where safe and predictable.
* Preserve user input when validation or network errors occur.
* Validate fields at useful moments without interrupting normal input.
* Show validation errors close to the affected field.
* Explain how to fix invalid input.
* Avoid technical validation messages.
* Clearly mark optional fields where useful.
* Avoid asking the same information multiple times.
* Use autocomplete and autofill where appropriate.
* Make keyboard navigation logical.
* Use sensible tab order.
* Support Enter and Escape behavior where users expect it.