How do you save your sig?
In PS, Always, always, always used the
save for web option for the useable version... Use
Save As option to save the .psd file only.
In
save for web option, you have the option to save in 4 types; gif, jpg, png-8 and png-24. In general, the quality from worst to excellent are gif -> png-8 -> jpg -> png-24. Only use .gif for animated sig. png-8 is for popout sig, jpg is catch all option, and png-24 for the best quality with no filesize restriction since its the hugest filesize of all 4 types.
For jpg, you have the option of specifying the % of quality. dropping the quality from 100% -> 99% often offers significant filesize reduction while maintaining the quality.
.jpg; 96% quality ^^
edit Damn you Sephi.. you cheated!