This tool doesn't collect, store, or transmit any personal data. Whatever you type or select while using it, what you're craving, how strong it feels, your ratings, stays in your browser for as long as the tab is open, and disappears the moment you close it.
There's nothing to delete because nothing is ever saved in the first place:
This page loads its typeface from Google Fonts. That means your browser makes a request to Google's servers to fetch the font files, which can include standard technical details like your IP address, the same as any website that uses Google Fonts. That request happens between your browser and Google directly. We don't see or control that data ourselves.
If this tool ever adds something that does store data, like saving your history between visits, this page will be updated to say so clearly before that happens, not after.