Your genome, decoded — and never out of your hands.
Already spat in a tube? Upload the raw DNA file you downloaded from 23andMe or AncestryDNA and instantly unlock a deeper, clearer report — ancestry, deep maternal & paternal lineage, 30+ traits, carrier status, and how your body processes medications. Decoded entirely on your device.
From a file you already have to a report worth reading — in seconds.
Bring your file
Download your raw data from 23andMe, AncestryDNA, MyHeritage, or FamilyTreeDNA — the same .txt or .zip you can already export. No new kit, no waiting weeks.
We decode it locally
Your file is parsed in your browser. Strand reads hundreds of thousands of genetic markers and runs every analysis on your own machine.
Explore the real you
Ancestry composition, maternal & paternal haplogroups, traits, carrier status, medication response, and a searchable map of every marker — with the science behind each call.
More than ancestry. The whole picture — with receipts.
Ancestry composition
A real admixture estimate across 7 world regions, computed from ancestry-informative markers — not a vague pie chart.
Deep lineage
Your maternal (mtDNA) and paternal (Y-DNA) haplogroups, traced back along the human migration tree.
Trait decoder
30+ traits — eye color, taste, caffeine, sleep, muscle type and more, each with the gene and study behind it.
Carrier & health
Well-established carrier and risk variants, clearly framed as research-grade and never as a diagnosis.
Pharmacogenomics
How your CYP enzymes and transporters shape your response to common medications, mapped to CPIC guidance.
Genome explorer
Search any rsID and see your genotype instantly, with one click out to dbSNP and ClinVar. Power-user heaven.
Your DNA is the most personal data there is. It never leaves your device.
When a genetics company goes bankrupt or gets breached, your genome becomes someone else's asset. Strandis built so that can't happen: parsing and analysis run in your browser. We never receive your file, never store your markers, and never sell anything to anyone. There's nothing to leak.
Read our privacy model →- ✓100% client-side parsing
- ✓Zero genome data sent to a server
- ✓Stored only in your browser, deletable in one click
- ✓No DNA sold, shared, or used for research without you
Strand vs. the spit-kit incumbents
The data is already yours. Now understand it.
Upload your raw DNA file and see your decoded report in seconds. Free and open source — no account, no kit, no catch.
Decode my DNA