LibreOffice Impress, how to scale an image to fit slide

Question

I have jpg images scanned from photographic slides. I find that when I place one of these on a slide it appears at approximately the size of the original transparency rather than scaling to fit the slide. Looking in Position and Size there does not seem to be an automatic way of expanding it to fit. Is there an automatic or quick way of doing this rather than resizing manually?

Answer 1

I don't believe this is an option in impress as an alternative:

You could write a script to do the manual step for you on a directory full of images you wanted to resize. I would likely do this from the terminal with avconv like this: avconv -i input.jpg -vf scale=160:120 output_160x120.png

Where scale is the width and height desired. granted you need to match the orignal ratio or the image won't look quite right so if your image ratio is 4x3 you might use 320:240, and 16x9 you might use 320:180. Based on your comment you might use 280:467. Of course you'll need a loop to iterate through all the input files.

#!/bin/bash

for f in *.jpg;
do    
command="avconv -i $f -vf scale=160:120 $f.160x120.png"
$command
done

You could modify this to meet your needs. Don't forget to set permissions on the script to be executable..

Note: Spaces in filenames will break this script...

If you need to remove them you might try

rename "s/\s+//g" *

or

IFS="\n"
for file in *.jpg;
do
    mv "$file" "${file//[[:space:]]}"
done

Space removal Source: https://stackoverflow.com/questions/15347843/remove-whitespaces-from-filenames-in-linux