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Office of the Federal Register Blog

Reader Aids

Reader Aids help people use and understand the federal rulemaking process. Reader Aids information is not published in the Federal Register.

XML now available for

We are excited to announce the availability of XML (Extensible Markup Language) data for through our partnership with the Government Publishing Office (GPO)!  The XML data can be repurposed for mobile web applications, data mashups, and other analytic tools by third party providers.  Through our partnership with the GPO, XML datasets for the daily Federal Register and Code of Federal Regulations have been available for several years on  The XML data can be downloaded daily at

“The release of eCFR data in XML by the Government Publishing Office makes the important information prepared by staff at the Office of the Federal Register available in a structured, open format,” says CFR Unit Supervisor Stephen Frattini. “eCFR XML is all about access: XML significantly expands access because it can be easily exported and utilized in a number of ways. With it, the American people can repurpose the contents of the eCFR to meet their own specific needs.”

The Electronic Code of Federal Regulations, or eCFR, is an online, unofficial version of the Code of Federal Regulations (CFR). Rules are incorporated into the eCFR daily by the CFR unit of the Office of the Federal Register within two business days of publication in the Federal Register. This new XML download feature allows users to access the XML from the daily updates made to instead of waiting for the yearly publication of the printed CFR books.