Versions

Latest official schema version:

Version 4.1 (May 2019)

• Primary http://www.loc.gov/standards/alto/v4/alto-4-1.xsd

• Alternate https://raw.githubusercontent.com/altoxml/schema/master/v4/alto-4-1.xsd

• Summary of changes

• Leave a comment about v4.1 schema - Requires GitHub account

Previous official schema versions:

Version 4.0 (January 2018)

• Preview https://raw.githubusercontent.com/altoxml/schema/master/v4/alto-4-0.xsd
• Summary of changes

Version 3.1 (January 2016)

• Primary http://www.loc.gov/standards/alto/v3/alto-3-1.xsd
• Alternate https://raw.githubusercontent.com/altoxml/schema/master/v3/alto-3-1.xsd
• Summary of changes

Version 3.0 (August 2014)

• Primary http://www.loc.gov/standards/alto/v3/alto-3-0.xsd
• Alternate https://raw.githubusercontent.com/altoxml/schema/master/v3/alto-3-0.xsd
• Summary of changes

Version 2.1 (February 2014)

• Primary http://www.loc.gov/standards/alto/v2/alto-2-1.xsd
• Alternate https://raw.github.com/altoxml/schema/master/v2/alto-2-1.xsd
• Summary of changes

Version 2.0 (January 2010)

• Primary http://www.loc.gov/standards/alto/v2/alto-2-0.xsd
• Alternate https://raw.github.com/altoxml/schema/master/v2/alto-2-0.xsd
• Summary of changes

---

*** START HOSTING by the Library of Congress ***
Former version were driven and hosted by CCS Content Conversion Specialists, Hamburg, Germany. With the handover of the standard to the LoC the ALTO Board was initialized.

Version 1.4 (December 2004)

• Primary http://schema.ccs-gmbh.com/docworks/alto-1-4.xsd
• Alternate https://raw.githubusercontent.com/altoxml/schema/master/v1/alto-1-4.xsd
• Changes see inline in the schema

Version 1.3 (June 2010)

• Primary http://schema.ccs-gmbh.com/docworks/alto-1-3.xsd
• Alternate https://raw.githubusercontent.com/altoxml/schema/master/v1/alto-1-3.xsd
• Changes see inline in the schema

Version 1.2 (June 2007)

• Primary http://schema.ccs-gmbh.com/docworks/alto-1-2.xsd
• Alternate https://raw.githubusercontent.com/altoxml/schema/master/v1/alto-1-2.xsd
• Changes see inline in the schema

Version 1.1 (December 2004)

• Primary http://schema.ccs-gmbh.com/docworks/alto-1-1.xsd
• Alternate https://raw.githubusercontent.com/altoxml/schema/master/v1/alto-1-1.xsd
• Changes see inline in the schema

Version 1.0 (June 2004)

• Primary http://schema.ccs-gmbh.com/docworks/alto-1-0.xsd
• Alternate https://raw.githubusercontent.com/altoxml/schema/master/v1/alto-1-0.xsd
• Changes see inline in the schema

*** Creation of the ALTO Standard by the EU funded METAe project. Finalized / released in June 2004. ***