I want to set a character limit when my product titles are showing in product listing pages.

I do want to keep the long titles when you are looking a product page, I just want to set a limit of character showing when customer browse for products as the title goes down on 2-3 lines and it doesn't look nice.

Is there any presets to do that? Or do you have to change code to do it? If so, what do I have to change and can you give me a detail instruction on how to do it.

Thanks you