If the poster is not mounted properly, this could cause that text or logo to disappear behind the frame of the lightbox. When creating a poster that will be placed in a lightbox, the designer must make sure text and logos arent positioned too close to the edge. This allows you to place that PDF on another page but only use the area covered by the advert.Ī more common use of the ArtBox is as a means to indicate the safety zone. It is never used for that but can be handy in a few cases: On a PDF page that contains an advertisement, the ArtBox can be used to define the location of that ad. It was originally added to indicate the area covered by the artwork of the page. Most prepress systems allow you to define the amount of bleed yourself and ignore the BleedBox. It is nice to know the size of the BleedBox but it isnt that important in graphic arts. The BleedBox determines the region to which the page contents needs to be clipped when output in a production environment. The imposition programs and workflows that I know all use the TrimBox as the basis for positioning pages on a press sheet. The TrimBox defines the intended dimensions of the finished page.Ĭontrary to the CropBox, the TrimBox is very important because it defines the actual page size that gets printed. The GWG industry association recommends not to use it at all. So if a PDF contains a CropBox definition, Acrobat uses it for screen display and printing. The CropBox defines the region that the PDF viewer application is expected to display or print. This means that PDF files used in graphic arts usually have a MediaBox which is larger then the trimmed page size.

For the average user, this probably equals the actual page size.įor prepress use, this is not the case as we prefer our pages to be defined slightly oversized so that we can see the bleed (Images or other elements touching an outer edge of a printed page need to extend beyond the edge of the paper to compensate for inaccuracies in trimming the page), the crop marks and useful information such as the file name or the date and time when the file was created.

Where is print conductor in acrobat