Hidden links are links that are supposed to be crawled by Googlebot, but are not readable to humans because:
- The link consists of hidden text (for example, the text color and background color are identical).
- CSS has been used to create small hyperlinks, as little as one pixel high.
- The link is hidden in a small character - for example, a hyphen in the middle of a paragraph.
If your site is perceived to contain hidden text and links that are deceptive in intent, your site may be removed from the Google index, and will not appear in search results pages.