Hidden single pixel links may be penalized Search Engine Guideline


Search engines may penalize hidden single pixel links.

Applicable standards

Change history

  • 5.36 Jan 2020 Check for X-Robots-Tag, rel=ugc and rel=sponsored.
  • 5.3 Sep 2013 Fixed false positive.
  • 2.0 Dec 2007 Added.

This page describes a web site issue detected in HTML documents by SortSite Desktop and OnDemand Suite.

Rule ID: SeoSpamSinglePixelLink