Anyway: neat! Good idea and works quite well.
But it does look like the matching text is wrong sometimes, i.e. third example here
https://subasub.com/?lang=hu&query=%20juh%C3%A1sz
The HU sentence is 'Beszéltünk a juhásszal' the corresponding IT sentence is 'Abbiamo parlato con il pastore' but it gets a much longer one.
Similarly, example 9 here https://subasub.com/?lang=hu&query=puszi
has "Adj egy puszit!" ("give a little kiss") on one side, which should match "Dammi un bacio!" but on the other side it matches the previous sentence ("…Vieni qui!" is "…- Gyere ide!").
Maybe a "report error" could be added although I fear it would be hard to support.