AI Placeholder Text Generator

Good placeholder text shows the expected format through realistic examples (e.g., 'john@company.com' instead of 'Enter email'), is short enough to be fully visible in the input field, uses a recognizable example pattern, and does not duplicate the field label. The best placeholders answer the implicit question: 'What exactly should I type here?' They reduce cognitive load and prevent formatting errors.

Never. Placeholder text disappears when users start typing, leaving them without a reference for what the field expects. This is an accessibility violation (WCAG 1.3.1) and a usability problem — users who tab between fields lose context. Always use visible, persistent labels above fields and use placeholder text only as supplementary guidance showing format or examples.

Text inputs benefit from format examples ('e.g., John Smith'). Email fields should show a realistic email format. Phone fields should show the expected format with country code. Date fields should display the exact date format ('MM/DD/YYYY'). URL fields should show the protocol ('https://example.com'). Search fields benefit from action-oriented text ('Search projects, people, or tags').

Placeholder text should be visually distinct from user-entered text — typically a lighter gray. However, it must still be readable. WCAG does not set a specific contrast ratio for placeholder text, but aim for at least 3:1 against the input background for usability. Avoid very light gray that is nearly invisible, as it defeats the purpose of providing guidance.

Placeholder text shows format or example inside the input field and disappears on focus. Helper text sits below the field as a persistent note that stays visible during and after input. Use placeholder text for format examples ('e.g., john@company.com') and helper text for constraints or instructions ('Must be a valid work email'). Together, they provide both quick guidance and persistent reference.