Length checks for executive summaries, the abstract, and the one-pager.
The tools that come up when the actual job is interpreting data rather than collecting it: CSV viewer with column typing for the export you just got from the database, JSON formatter for the API response, regex tester against the source string, base64 for the binary blob someone embedded in a JSON field, hash for source verification, and the AI summarizer for digesting long-form sources.
As short as it can be while still carrying the decision: the recommendation first, then the two or three numbers that support it. The counter is for fitting a stated limit, not for filling one.
Check the rule you are writing against. Journal abstracts and grant forms usually count everything, internal documents rarely do. The counter gives you both the word and the character count so you can match either.
Tools disagree about hyphenated words, figures and non-Latin text. If a submission portal enforces the limit, match its own count rather than this one, and leave a margin.