رحلی

Also known as Quarto, 4°, 4to

thumb|right|Title page of the first quarto edition of Shakespeare's ''Midsummer Night's Dream'', 1600, from the [[Folger Shakespeare Library]] thumb|Quarto metrics compared to the folio and octavo Quarto (abbreviated Qto, 4to or 4º) is the format of a book or pamphlet produced from full sheets printed with eight pages of text, four to a side, then folded twice to produce four leaves. The leaves are then trimmed along the folds to produce eight book pages. Each printed page presents as one-fourth size of the full sheet.