4 Matching Annotations
  1. Mar 2021
  2. Jul 2020
    1. RDFa is intended to solve the problem of marking up machine-readable data in HTML documents. RDFa provides a set of HTML attributes to augment visual data with machine-readable hints. Using RDFa, authors may turn their existing human-visible text and links into machine-readable data without repeating content.
    1. Every AMP document needs to have a link referencing the "canonical" version of that document. We'll learn more about what canonical pages are and different approaches to canonical linking in the Making your page discoverable step of this tutorial.
    1. Canonical linking in regular HTML pages is a common technique for declaring which page should be considered the preferred page when multiple pages include the same content.