http://help.thenightsky.io/general-questions/pdf-or-digital-file

Unfortunately we do not have the option of choosing a PDF or digital file. We feel this may jeopardize the final print, as the quality of the print is our highest priority. We wanted to create something that would would last for years to come and hang proudly on the walls of customers without any fading. We spent a lot of time testing different paper and inks to create the quality that we now deliver.

The print is on museum grade, art matte, acid free paper and printed using archival ink.

Hope this helps!

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