Acrobat pdf files have FOUR flavors, three of which can be read by the
'viewer'
We need to know which flavor your need. The cost, file size and
appearance are all different. Choose the one which best fits your need:
Image+Hidden text- The viewer will SEE the
image as the original scan, but will search only
the converted (hidden) text. The search term will be highlighted as
a box around the raster text.
Image Only- this is as if we just scanned the pages and
combined them into a file. These are not searchable, there are only
"pictures" of the exact pages.
Normal- This is searchable text. (like a book)
However, you cannot edit any text in it (just erase it). Images and
text are 'one page'. This format comes from publishing a .doc
file in MSWord to a PDF format. A very expensive conversion format when you
start with paper, instead of the text file. You are basically
converting to a text format and then going into PDF.