Public service advertising (PSA) is advertising created to inform, educate, or influence the public about social issues and public welfare, rather than to sell a product or make profit.

Key characteristics of public service advertising
   - Focuses on social good, not commercial gain
   - Usually sponsored by government bodies, NGOs, or public institutions
   - Aims to change attitudes or behavior
   - Often emotional, informative, or awareness-driven

Common topics
  - Health awareness (anti-smoking, COVID-19, vaccination)
   - Road safety (seat belts, drunk driving)
   - Environmental protection (save water, reduce plastic)
   - Education & literacy
   - Social issues (child labor, gender equality)