[sdiy] sdiy(s) and..question on XNview

[Ullrich Peter]

Hi Bob!

>anyone familiar with xnview..I noted I finally used it last night. But I
>notice that approx. 3.5M of Jpeg got turned into 23M of file!  What's up
>with that?  Does anyone know if there is a way to shrink it any?

This is because of the compression of the pics in the PDF. The same thing happended in Adobe Acrobat version 4.
It could be solved by converting the pictures into GIF format (reducing to 256 colors with adjusted palette). The the 
PDF had about the same length as the pictures.

I tried it with 3 pics a few minutes ago:

original pics in JPG: 40kB, 309kB, 90kB =>  437kB (explorer size)
PDF with XnView (Standard settings): 2713kB

converted to GIF: 50kB, 414kB, 118kB => 581kB  (explorer size)
PDF with XnView (Standard settings): 568kB

If you can save your images in GIF you can get rid of the JPEG compression artifacts and in this way you 
can normally get higher GIF compression and so smaller files.

If you have greyscale files you can reduce the color depth to 16 - you will normally see no difference but the 
files are much smaller.

With this you can scan and save for example 100 page synth manuals in only a few megabytes!

I hope that helps.
If you need further help please email me privately as I am quite sure that not everybody is interested in this offtopic discussion.

Ciao
Peter