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Web Accessibility

The National Science Foundation is committed to making every document on its World Wide Web server accessible to the widest possible audience.

We work with NSF's accessibility specialists and other federal agencies and federal web consortia to ensure that our documents are, to the maximum extent feasible, accessible to persons using special screen reading software and hardware.

NSF also encourages its grantees to use both the web to disseminate information about their work, and to create World Wide Web pages that are generally accessible for persons using screen reading devices. More information about accessible web design is available.

Many of the documents on our web server are in ASCII or HTML formats. We also have some files in word processing or spreadsheet formats, and in addition we produce many of our documents as PDF (Portable Document Format) files. Many persons using screen reading devices cannot read documents in PDF format. Therefore, every document on our server in Portable Document Format is either accompanied by an ASCII, HTML, or word-processing version, or can be made available as a printed document upon request. Our commitment is particularly stringent for any publication relating to NSF funding opportunities. For more information or to provide feedback on accessibility issues or problems and the NSF web site, please send an email to the NSF Webmaster (

NSF's Office of Equity and Civil Rights (OECR) is responsible for coordinating the agency's compliance with Sections 501 and 505 of the Rehabilitation Act of 1973, as amended. For more information, please contact OECR at 703-292-8020 or email Pamela Smith (

For more information and/or assistance with Section 508 of the Rehabilitation Act of 1973, please contact Katherine Otts, NSF's Section 508 Compliance Officer, at 703-292-7552 or e-mail

Architectural Barriers Act of 1968 (42 U.S.C. §§ 4151--57)

The Architectural Barriers Act (ABA) requires access to facilities that are designed, built, altered, or leased with Federal funds. The Access Board is the federal agency responsible for enforcing the ABA. The Access Board's accessibility standards are available on their website at, and information about filing a complaint may be found at

Last updated: March 1, 2023