Change layout, or have the option to

[ItIsSeven]

The layout would be much better if instead of it being half/half, there's a box at the top, and the converted text is at the bottom.
This layout is much better as it makes it less likely for text to go across multiple lines unless it's super long. This is a key point as this tool is often used to convert multiple titles at once.

Also something to consider would the site expanding instead of having to scroll when a lot of lines are added.
Or the option for this to be possible at least, when having a lot of lines, it's preferable to see it rather than having to scroll.

This is how it currently is:

This is how I propose it to be:

[royalfig]

I'm working on a redesign now, so I'll keep this option in mind.

[ItIsSeven]

I've noticed that if you squeeze the window, this happens for you, but it'd be nice to have it at full size but be able to press something that makes it appear as I mentioned rather than just the current layout.