what is charset-grid fr?

charset-grid is a tool that helps you see which characters a font can actually display. If you've ever picked a font for a project and later discovered it was missing certain letters, symbols, or punctuation marks, this tool exists to prevent that surprise. It gives you a clear visual grid showing exactly what a font covers and, more importantly, what it doesn't. The project is built primarily with CSS, which suggests it lays out character support in a visual, grid-like format rather than as a plain list or a command-line readout. The idea is that you can look at a font and quickly scan across a chart of characters to spot gaps. However, the README doesn't go into detail on exactly how you feed a font into the tool or what the output looks like in practice, so some exploration of the repository itself would be needed to get it running. This would be useful for designers, typographers, or anyone building products that rely on fonts supporting multiple languages or special symbols. For example, if you're building an app that needs to display content in several languages, you could use this tool to verify that your chosen font includes all the accented characters or scripts those languages require before you commit to it. It's also handy for anyone working with open-source or custom fonts, where character coverage can be uneven. The project is released as free software under an open-source license. Beyond that, the README is quite sparse, so it doesn't offer much guidance on setup or advanced features. You would likely need to dig into the code to understand the full workflow.