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Ok, I figured out myself.

Original size: 4800 x 3600 pixcels

Target size: 16cm x 12cm for printing on 300dpi.
Target size in inches: 6.3'' x 4.7''

Reduced file size without losing quality should be: (6.3 x 300) x (4.7 x 300) pixels = 1890 x 1410 pixels

So it reduces size by factor of about 6.5 ...

Hi gmedina,
You are great. It worked without any problem.
Thanks, Nadeem

Hi everybody,

I have gif files of size 4800 x 3600 pixels. I want to put them in a document where they are 16cm wide and the document is to be printed on a printer with 300 dpi resolution. My question is to which size (in pixels) should I reduce this file in order to reduce its size as much as ...

I am trying to produce Section titles with numbers. I also want a decimal point after the number in Section titles. I used these commands in
preamble of my document.

\titlelabel{\thetitle.\quad} %Why this is not working when using \titleformat commands in next line
\titleformat{\section}{\bf ...

Hi Juanjo,
Thanks a lot. It worked after slight modifications.
Regards, Nadeem

Hi all, I'm using the fancyhdr package to get headers on each page of my document. I've successfully created the headers but I am unable to highlight the headers. I want to highlight the headers as shown in attached picture or on second page of this pdf file:

http://homepage.boku.ac.at/imrannad ...