De belangrijkste zoekwoorden over de concurrenten bestuderen: inzichten behalen betreffende een functies betreffende Ahrefs I’m sure the “duplicate pages” part is self-explanatory. These are pages that are identical or very similar to other pages. The “without canonical” part is a technicality—but needless to say, these issues need fixing. For example, https://troysrnfv.oblogation.com/28278451/de-grootste-gids-naar-snelheidsanalyse