/ Product · Sequence Editor
See your sequence the way it should be seen.
A browser-native DNA and RNA sequence editor that loads GenBank, FASTA, and SnapGene files instantly — with a zoomable circular map, base-by-base view, and full annotation table. No software to install.
Supported formats
Features
01
Multi-format import
Open any file format used in the field — GenBank, FASTA, SnapGene, EMBL, and raw text — with automatic feature parsing. No conversion step needed.
02
Circular & linear map
Switch between a zoomable circular plasmid view and a scrollable linear map. Both update in real time as you edit.
03
Base-by-base view
Zoom into individual nucleotides with colour-coded bases (A, T, C, G) and reading-frame overlays. Codon highlighting makes ORFs immediately visible.
04
Annotation table
Every feature is listed in a sortable table alongside its coordinates, strand, and qualifiers. Click any row to jump to its position on the map.
05
In-browser editing
Insert, delete, or replace sequences directly in the editor. All downstream annotations shift automatically — no manual coordinate arithmetic.
06
Export anywhere
Export your edited sequence as GenBank, FASTA, or SnapGene-compatible format, ready to share with collaborators or submit to NCBI.
Start editing sequences today.
Free to use. No download required. Works in any modern browser.