What file formats are supported?

We support FASTA/FASTQ/GenBank (sequences), BAM/SAM/CRAM (alignments), VCF/BCF (variants), PDB/mmCIF (protein structures), and CSV/TSV (data tables).

Is there a file size limit?

Our viewers are optimized for large files using virtual scrolling and web workers. Most browsers can handle files up to several gigabytes.

Do I need to install anything?

No installation required. Our viewers work entirely in your web browser. Just open the site and start viewing your files.

Smarts Bio View

View and edit bioinformatics files. Made with ❤️ by smarts.bio

Drop your file here or click to browse

We'll automatically detect the file type and open the right viewer

CSV/TSV

FASTA/GenBank

SAM/BAM/CRAM

VCF/BCF

PDB/mmCIF

Maximum file size: No limit • All processing happens in your browser

100% Private

All processing happens in your browser. Your files never leave your computer.

Lightning Fast

Optimized for large files with virtual scrolling and web workers.

Completely Free

No sign-up, no subscription, no hidden costs. Just pure functionality.

Or Choose Your Viewer Manually

Information Viewer

View and analyze CSV, TSV, and tabular data files

Open Viewer →

Sequence Viewer

Visualize and edit FASTA, GenBank, and DNA/RNA sequences

Open Viewer →

Alignment Viewer

Explore SAM, BAM, and CRAM alignment files

Open Viewer →

Variant Viewer

Analyze VCF and BCF variant call files

Open Viewer →

Structure Viewer

Visualize PDB and mmCIF protein structures

Open Viewer →

Phylogenetic Tree Viewer

Display and analyze Newick and Nexus tree files

Coming Soon

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