Skip to secondary navigation Skip to main content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.


The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Trusted Tester and ICT Testing Baseline

ICT Testing Baseline

Baseline tests of Information and Communication Technology (ICT) attempt to reduce ambiguity, increase consistency of results, and emphasize methods and techniques to reliably meet federal accessibility requirements.

The ICT Testing Baseline describes how to evaluate conformance to the Revised 508 Standards, which align with WCAG 2.0 Level A and AA Success Criteria. It is organized by categories to help you easily identify applicable requirements. Note that the Baseline is not a test process and does not include testing tools; rather, it should be used to create an accessibility test process.

Email the ICT Baseline Working Group at with questions.

DHS Trusted Tester Process & Certification Program

The DHS Trusted Tester Process is a manual test approach that aligns with the ICT Testing Baseline, and provides repeatable and reliable conformance test results. DHS offers training and formal accessibility testing certification for using the DHS Trusted Tester Process. Agencies that adopt the Trusted Tester Process only accept test results from individuals who have been certified as Trusted Testers.

Note that DHS no longer provides training and certification on Trusted Tester v4.0.

Email the Department of Homeland Security (DHS) Accessibility Helpdesk at with questions regarding the Trusted Tester Process & Certification Program.

On-Demand Webinars

The resources on this page were created through interagency collaborative efforts sponsored under the Accessibility Community of Practice (ACoP), a committee under the Federal Chief Information Officers (CIO) Council and the Federal Chief Acquisition Officer (CAO) Council. These resources are endorsed by the ACoP for use across the US Government for validating conformance to the Revised 508 Standards.

Reviewed/Updated: February 2023

An official website of the General Services Administration

Looking for U.S. government information and services?