There are diminutive suffixes in English language too, but they are used just in some words. Some of them are:
Kitten – kitty, Jim – Jimmy, Charles – Charlie
In Spanish language these suffixes can be –ITO(m) and –ITA(f), -CITO(m), -CITA(f), -ITITO(m), -ITITA(f).
Gato – gatito – cat(m)
Gata – gatita – cat(f)
Chico – chiquito – guy
Chica – chuquita – chiquitita – girl
Pequeño – pequeñito – small
Ingrid – ingridcita – Ingrid(name)
Poco – poquito – poquitito – little
There is the postfix –ISIMO for adjectives, this postfix empowers meaning of an adjective:
Bueno – good, buenísimo – so good!
Grande – big, grandísimo – so big!
Su perrita es linda – Her dog is cute
Hay poquitas monedas en la cajita, puedes sacarlas – There are just a few coins in the small box, you can take them
¿Dónde está mi bolsita? – Where is my bag?