.csv

Comma separated values, a plain-text tabular data format exchanged between spreadsheets and databases

Dedicated renderer

Format facts

MIME type: text/csv
Apple UTI: public.comma-separated-values-text
Stock Quick Look: shown as plain text
Planned approach (census): special-renderer
Icon hint: renders
Prevalence: universal

Renderer note (from the census)

macOS Quick Look handles CSV well natively

Gotchas: large files slow down QL