.fa

FASTA sequence file, the plain-text bioinformatics format for nucleotide and protein sequences

Dedicated renderer

Format facts

MIME type: application/x-fasta
Apple UTI: custom
Stock Quick Look: shown as plain text
Planned approach (census): syntax-highlight
Icon hint: generic-icon
Prevalence: universal

Renderer note (from the census)

pure Go trivial, parse headers and sequences

Gotchas: bioinformatics DNA