what is justified alignment

Justified alignment is a type of text alignment in which the spaces between words and between glyphs or letters are stretched or compressed in order to align both the left and right ends of consecutive lines of text. When using justification, it is customary to treat the last line of a paragraph separately by simply left or right aligning it, depending on the language direction. Justification is a matter of personal preference and is not a signifier of professional typography. It is commonly used in print media, but it can also be used in digital media. Some modern typesetting programs offer four justification options: left justify, right justify, center justify, and full justify.