Fitter Happier Text is a JavaScript utility that dynamically adjusts text size to perfectly fit within a given container, ensuring optimal readability and layout consistency across different screen sizes. Inspired by responsive design principles, it calculates the maximum font size that allows text to occupy available space without overflowing. The library is particularly useful for headlines, banners, and UI elements where visual balance and proportional scaling are important. It operates by measuring container dimensions and iteratively resizing text until it fits within constraints. ...