I recently launched https://freeutilitytools.com https://freeutilitytools.com — a collection of free tools like text formatters, number converters, age calculat

I recently launched https://freeutilitytools.com https://freeutilitytools.com — a collection of free tools like text formatters, number converters, age calculators, etc. The goal is to solve simple, everyday problems without ads, logins, or distractions. But I don’t want it to end up as another generic “tools everyone has” site. What are some uncommon or underappreciated tools you wish existed? Curious to hear your thoughts — whether it’s niche calculators, developer tools, or weird-but-useful utilities.