Hi Peter
If there are no restrictions/security on the pdf then you could select
all the text and paste it into Pages or Appleworks. If it still faint
in the word processor then try changing text colour. If the pdf has
graphics that you want do a similar procedure.
Merv
Neil Houghton wrote:
Hi Peter,
One thing you can do is to "save as" an image format and then use an image
editor to adjust levels.
As a check, I just opened a pdf in preview and then saved as a png. I could
then open the png in both Graphic converter and iPhoto - both of which
offered me options to set levels.
I'm not very familiar with using iPhoto but I could see that the edit pane
gave access to an "Adjust" tool palette which offers many adjustments,
including:
- An histogram with sliders for the black, white and midrange levels
- Exposure
- Contrast
- Saturation
Actually, I now see that once you save the pdf as an image, you can actually
adjust the colour and exposure within Preview, although iPhoto may offer
more options/controls.
One thing to be aware of is that the conversion to an image means that you
can no longer select text to copy and paste into other applications (all the
content has been changed into a bitmap) - so it may be worth keeping the
original pdf for that and just using the .png (or other image format) for
optimising the levels for printing.
Cheers
Neil
--
"Science teaches that we must see in order to believe, but we must also
believe in order to see."
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