no need for more context 16:55 May 13, 2015
Il est aussi possible de retourner une image du document, mais autant fournir l'original électronique avec tous les éléments de preuves intégrés au PDF.
the difference between "une image du document" basically a picture of document (.bmp .jpeg .gif .png etc file format) and the same document as a non-editable .pdf file is in the potential difficulties in creating "fakes"
anyone past the basic level of photo-editing can edit the picture of an invoice quite easily to change dates, amounts etc and create a "fake invoice" as much convincing that the initial one, but "editing" a non-editable PDF file is supposed to be impossible because of "les éléments de preuves intégrés au PDF." where "les éléments de preuves" are "intégrés au PDF" i.e are something that is incorporated / built into / part of the PDF format.
Specifics of the PDF format aside, even basic French grammar is enough indication that these "éléments de preuves" are "part of" PDF (i.e. the definition/description of a file format), not a characteristic of the whole document.
I keep saying "supposed to" because the PDF format is so old that someone probably cracked it by now. | 
