From Wikipedia, the free encyclopedia
Jump to: navigation, search

ALTO is an open XML standard to describe OCR text and layout information of printed documents. It is often used with METS standard.


An ALTO file consists of three major sections as children of the root <alto> element:[1]

  • <Description> section contains metadata about the ALTO file itself and processing information on how the file was created.
  • <Styles> section contains the text and paragraph styles with their individual descriptions:
    • <TextStyle> has font descriptions
    • <ParagraphStyle> has paragraph descriptions, e.g. alignment information
  • <Layout> section contains the content information. It is subdivided into <Page> elements.
    <?xml version="1.0"?>

See also[edit]

External links[edit]