file formats

See also: output files.

Format		Description
Database files		Target sequences plus possible index.
UDB		USEARCH database with sequences and index.
FASTA		Text file containing sequence data.
FASTQ		Text file containing sequence data and quality scores.
blast6out		Tabbed text compatible with BLAST -m8 and BLAST+ -outfmt 6.
Labels		Sequence labels, see also size annotations and ‑notrunclabels option.