This is how I reduce the font in a lrf file

[grimborg]

I am using the Caecilia font and text is too big for me (PRS 505). I use this script to reduce the text by a ratio (85% works for me). Usage is: reducelrs < file.lrs > file_reduced.lrs

#!/usr/bin/perl -w
use strict;
my $ratio = 0.85;
while(<>) {
    if (/fontsize="(\d+)"/) {
        my $size = (int($1)*$ratio);
        s/fontsize="\d+"/fontsize="$size"/g;
    }
    print;
}

If you have a bunch of lrf files in the current directory you can do this:

mkdir -p done temp
cd temp
for i in ../*lrf;
    do cp "$i" .
    lrf2lrs *lrf
    a=`ls *lrs`
    mv "$a" a
    reducelrs < a > "$a"
    rm a
    lrs2lrf *lrs
    mv *lrf ../done
    rm *
done
cd ..

This will create two directories: temp and done. Temp is a temporary directory used for converting files. The resulting lrf files are left in done/

Tested only in GNU/Linux. I don't know how to do this in Windows. Works for me, but no warranties