FASTQ Quality Viewer
Inspect FASTQ/.gz in the browser for Phred, GC, length, N-content, adapter motifs, exact duplicates, and overrepresented sequences.
Drop a .fastq, .fq, or .gz file, or click to browse
All processing happens in your browser — no data is uploaded
QUALITY SCORE REFERENCE
- • Q30: 1 in 1,000 error rate (99.9% accuracy)
- • Q20: 1 in 100 error rate (99% accuracy)
- • Q10: 1 in 10 error rate (90% accuracy)
- • Adapter and duplicate results are a browser-side screen of at most 50,000 reads, not a replacement for a full FastQC/MultiQC pipeline.