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How to get your raw file
from each provider.

Before Crick can show you anything, you need the raw text file from whoever sequenced you. The instructions below are accurate as of May 2026; the underlying menus shift occasionally, so the screenshots in the providers' own help centres are the tie-breaker.

23andMe

Format
Tab-separated text (.txt), often gzipped
Typical size
≈ 15–20 MB uncompressed
Official help
you.23andme.com
  1. Sign in at 23andme.com on a desktop browser. The mobile app doesn't expose the raw download.
  2. Open the profile menu (top right) and choose Settings.
  3. Scroll to the 23andMe Data section near the bottom and click View.
  4. Find Download Raw Data and click Submit Request.
  5. 23andMe will email you a download link. The link is valid for 24 hours.
  6. Click the link, sign in again, and download the file. Don't unzip it — Crick reads the .txt and .txt.gz directly.

Works for v3, v4, and v5 chip generations. The header line will say something like `# This data file generated by 23andMe at: ...`.

AncestryDNA

Format
Tab-separated text (.txt) inside a .zip
Typical size
≈ 6–8 MB unzipped
Official help
ancestry.com
  1. Sign in at ancestry.com on a desktop browser.
  2. Hover over DNA in the top nav and click Your DNA Results Summary.
  3. Open the Settings menu (top right of the results page).
  4. Under Actions, find Download Raw DNA Data and click Download.
  5. Confirm your password, tick the acknowledgement, and click Confirm.
  6. Ancestry will email a download link. Open the email, click the link, and save the .zip.
  7. Unzip it to get AncestryDNA.txt — that's the file Crick reads.

Inside the .zip you'll see a single .txt file with a header like `#AncestryDNA raw data download`.

MyHeritage

Format
CSV (.csv), often inside a .zip
Typical size
≈ 8–12 MB unzipped
Official help
myheritage.com
  1. Sign in at myheritage.com on a desktop browser.
  2. Open the DNA menu and choose Manage DNA kits.
  3. Find your kit in the list and click the three-dot menu on the right.
  4. Choose Download raw data.
  5. MyHeritage will email a confirmation link. Open the email and click Confirm.
  6. Return to Manage DNA kits, click the three-dot menu again, and choose Download once more — the link is now active.
  7. Save the .zip and extract the .csv inside.

The first row of the file will look like `RSID,CHROMOSOME,POSITION,RESULT` with values quoted in double-quotes.

Living DNA

Format
CSV (.csv)
Typical size
≈ 18–22 MB
Official help
livingdna.com
  1. Sign in at livingdna.com.
  2. Open Account → Your tests.
  3. Find your DNA test and choose Download raw data.
  4. Confirm your account password.
  5. Living DNA will email a secure download link — open the email and click through.
  6. Save the .csv. No unzipping needed.

The header includes `# Living DNA` so Crick's auto-detector picks it up even if you rename the file.

Nebula, Dante Labs & other whole-genome providers

Format
VCF (.vcf) or gzipped VCF (.vcf.gz)
Typical size
Varies — single-sample VCFs are typically 50 MB to a few hundred MB
  1. Sign in to your provider's portal (Nebula Genomics, Dante Labs, Sequencing.com, etc.).
  2. Look for a Files, Downloads, or Raw Data section.
  3. Choose the single-sample VCF — not the BAM, FASTQ, or gVCF. Crick reads variants, not raw reads.
  4. Download the .vcf or .vcf.gz file.
  5. If you have only a multi-sample VCF, filter it to your sample first using bcftools view -s <sample> input.vcf > yours.vcf.

Crick reads the standard VCF v4.x format. The first line will say `##fileformat=VCFv4.2` or similar.

Got the file?

Upload it on the next page. It's parsed in memory, matched against the library, and discarded the moment matches are found — there's no /tmp file, no database row, and no account behind any of this.