fonts.conf

<?xml version='1.0'?>
<!DOCTYPE fontconfig SYSTEM 'fonts.dtd'>
<fontconfig>
        <!-- default settings -->
        <match target="font">
                <edit mode="assign" name="antialias">
                        <bool>true</bool>
                </edit>
                <edit mode="assign" name="embeddedbitmap">
                        <bool>true</bool>
                </edit>
                <edit mode="assign" name="hinting">
                        <bool>true</bool>
                </edit>
                <edit mode="assign" name="hintstyle">
                        <const>hintslight</const>
                </edit>
                <edit mode="assign" name="lcdfilter">
                        <const>lcddefault</const>
                </edit>
        </match>

        <!-- only enable RGB subpixel AA for large text -->
        <match target="font">
                <test name="size" qual="any" compare="more">
                        <double>13</double>
                </test>
                <edit mode="assign" name="rgba">
                        <const>rgb</const>
                </edit>
        </match>
        <match target="font">
                <test name="pixelsize" qual="any" compare="more">
                        <double>17</double>
                </test>
                <edit mode="assign" name="rgba">
                        <const>rgb</const>
                </edit>
        </match>
</fontconfig>