Placeholder text
Filler text with no meaning, used to check a layout
Placeholder text is auxiliary text used to fill a layout. It has nothing to do with the site's content and serves only to show how a page will look with text. Such text often carries no meaning and consists of words and phrases that form grammatically correct sentences without conveying specific information.
Web developers and designers use placeholder text when the final content is not yet available but they need to see how a page will look with filled text blocks. It lets them judge how well the content sits in the design and make sure the layout is correct.
Even though placeholder text is a temporary stand-in, the number of characters in each block matters. It shows how much content will be needed to replace it and how that content will read in the finished design.