Quick text checks for awkward or risky edge cases
Utility tools cover the small jobs that do not belong to one writing category but still come up often: sanity checks, simple transformations, suspicious-character inspection, text validation, and other one-off tasks. They are useful when you need a quick answer before pasting text into another system or sharing it with someone else.
Because this category includes varied tools, pay attention to what each result actually means. A warning may indicate something worth checking rather than a definite error, and a successful format check does not prove the underlying content is trustworthy. Use the output to guide the next step, not to replace judgment.