cyanea/format-converter

Overview

Format Converter transforms bioinformatics files between formats directly in the browser. Select a source format, pick a target, drop your file, and download the result — all processed locally via WebAssembly. No upload, no file size limits beyond your browser’s memory.

Features

• Wide format support — Convert between FASTA, FASTQ, SAM, VCF, BED, GFF3, GTF, GenBank, EMBL, and tab-delimited formats.
• Batch conversion — Drop multiple files to convert them all at once.
• Field mapping — Configure which fields map to the target format when conversions are not 1:1.
• Validation — Input files are validated during parsing; errors are reported with line numbers.
• Compression — Output can be gzipped automatically for large files.
• Preview — See the first 100 lines of the converted output before downloading.

How It Works

All conversions are powered by cyanea-io’s comprehensive parser/writer suite compiled to WASM. The tool parses the input into an internal representation, validates the data, applies any field mappings, and serializes to the target format. Processing runs in a Web Worker to keep the UI responsive.

Use Cases

• Pipeline prep — Convert a GFF3 to BED for use with bedtools without installing anything.
• Quick reformatting — Turn a GenBank file into FASTA for BLAST input.
• Data exchange — Convert between formats when collaborators use different tools.
• Validation — Use the converter as a format validator — if it parses cleanly, the file is well-formed.