Skip to main content
U.S. flag

An official website of the United States government

Service Alert: Planned Maintenance beginning July 25th

Some services may be unavailable or have limited functionality for 24 hours or longer starting 9 PM EDT. Learn more about the maintenance.

National Library of Medicine Web Application/Site Development Guidelines

This page provides references for NLM Web projects.

Design Framework

The NLM Main website (https://www.nlm.nih.gov)  is based on the U.S. Web Design System (USWDS).
Contact the National Library of Medicine at https://support.nlm.nih.gov/  for any specific questions.

Design Principles

See the U.S. Web Design System (USWDS) Design priciples page for guidance.

Accessibility

See the Accessibility on the NLM Website page and the U.S. Web Design System (USWDS) Accessibility page for guidance.

Policies

See the NLM Web Policies page for guidance.

Last Reviewed: March 12, 2024