All designs have information on file format, size and repeat information on the design info pane to the right of the design. We ask designers to offer designs in repeat format whenever possible.
The design file info can be found on the info pane on the right-hand side of the design page - file format/design size/repeat info can be found here. If you see a design that is not in repeat or you would like it modified slightly then contact us at support@patternbank.com and we'll contact the designer to to see if they can help.