wally

Render BAM/CRAM alignments in the web browser.

Get help · Citation · Source

Log

        
How to use wally
Local BAM/CRAM files
  1. Drag one or more sorted, indexed BAM/CRAM files and their .bai/.crai indexes into the drop zone.
  2. Add a matching reference FASTA and its .fai (and .gzi if the reference is bgzipped).
  3. Optionally add a bgzipped, tabix-indexed BED annotation (.bed.gz + .tbi) to overlay, for instance, gene models.
  4. Enter a region and click Render Region.
Remote 1000 Genomes data
  1. Pick a reference build (GRCh38 or T2T-CHM13) and add one or more samples.
  2. Enter a region and click Render Region.

On the Results tab you can zoom, shift, and pan the plot, toggle tracks (paired-end, soft-clips, supplementary, coverage, genes, modified bases), and set the row height with the slider. Click Show Example for a bundled demo.

Everything runs locally via WebAssembly, i.e., local BAM/CRAM files never leave your computer.