File Format
*.pdf is the preferred file format. If you send source files (PowerPoint®, InDesign®, QuarkXPress®, Word®, etc.) there can be problems with fonts, word wraps, and graphics. If you want to send source files, also include all fonts and graphics files (programs like InDesign® allow you to “collect for output”).
File Size
We will proportionally enlarge or shrink your artwork to fit within the poster size ordered. For a 42" X 84" poster, you might want to design at 21" X 42”. We will enlarge it to 42" X 84”.
Also, for other printed products it is conventional to interpret the first dimension as width and the second as height (8.5" X 11" is 8.5" wide by 11" high). However, for larger posters the first dimension is the width of the roll of paper in the printer, and the second dimension is the length that it prints. If you want a poster to be 72" wide and 36" tall, we still refer to that as 36" X 72”.
Final Trim Size
Final size might be slightly smaller than the listed size. For instance, a 36" X 72" poster will actually measure 35.25" X 71.5" (the printers cannot print to the edge of the paper; our paper is either 36” or 42” wide). Artwork is rotated and sized proportionally to fit the trim size. 
Borders
Do not put a fine line around the poster or any element of it when the line is to be at the trimmed edge. It will be trimmed off. Borders of .25" or greater will be maintained.
Resolution of Photographs and Graphics
Pixel-based graphics (photos, *.jpg files, *.tiff files) should be at least 100 (and no more than 300) dots per inch (dpi) AT THE FINISHED SIZE. If you design a 36"X 60" poster as an 18" X 30" file, photographs you place should be at least 200 dpi. When we scale the file to 36" X 60”, the photograph will be at 100 dpi (double the size means half the resolution). If you place a 300 dpi photograph in a poster file and then enlarge it 300% in the file, it is now 100 dpi. If we then scale your file 200% to fit the poster size ordered, the photograph will be 50 dpi AT THE FINISHED SIZE. Too much resolution is OK, although it can lead to large file size. Too little resolution will lead to obviously pixelated images on the finished poster.

Based on the selection of product size and additional option attributes, you can view and download the help template for the product.
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