Frequently Asked Questions
What are the latest features of the Sequence Indexer?
The Sequence Indexer now supports a two-column grid layout, zoomable sequence sections, grid density controls, responsive design for mobile/tablet, and advanced input/output options. You can analyze sequences from NCBI, upload files, or paste text, and view results in multiple formats.
How does the two-column grid and zoom feature work?
The main grid displays your sequence in two columns per row, each showing 100 positions. Each column has a Zoom button (🔍) that opens a detailed modal view for that section, making it easy to examine specific regions in depth.
What is grid density control?
Grid density controls let you switch between Normal, Compact, and Expanded views. This changes the number of columns and font size, so you can see more or less data per screen depending on your preference.
How does the tool handle very large sequences?
The tool uses efficient pagination and virtual rendering to handle sequences of any length. You can choose how many positions to view per page (500, 1000, 2000, 5000), and navigate easily with Previous/Next buttons. Zoom and grid features work on all sequence sizes.
What sequence formats and sources are supported?
You can input sequences by:
- NCBI Accession ID (e.g., NC_045512.2, NM_000546.6)
- File Upload (FASTA, GenBank, or plain text)
- Direct Text Input
The tool auto-detects DNA, RNA, or protein based on content and accession prefix.
How does the responsive design help on mobile and tablet?
The layout automatically adapts to your device. On smaller screens, the grid switches to a single column, buttons and controls stack vertically, and the modal view remains easy to use. All features are fully accessible on mobile and tablet.
How can I export or share my results?
Use the Export as CSV button to download your full sequence analysis as a spreadsheet. The export includes all positions, characters, and types, regardless of the current page or view.
What do the color codes mean in the grid?
Colors indicate sequence type: DNA (blue), RNA (green), Protein (red), and Other (gray). Hovering over any character shows its position and type.
Is my sequence data private?
Yes. All analysis is performed in your browser or securely on our server. Uploaded files and pasted sequences are not stored or shared. For NCBI fetches, only the accession ID is sent to retrieve public data.
Who can I contact for support or suggestions?