Observed arrival · 2026-10-15
AncestryDNA Window Comparator
A browser-based tool for comparing how AncestryDNA assigned chromosome segments across updates from 2022 to 2026.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- AncestryDNA users comparing past ethnicity estimates
- Worth noticing
- Unknown region codes remain visible as raw codes, and the current full five-digit dictionary can refresh online.
Field notes
Users paste the JSON responses themselves; the page says the parser accepts both wrapped and direct chromosome-data formats. Its region labels draw on different dictionaries by year, and unknown codes remain visible rather than disappearing. The page also offers parent-specific views, a changed-segments filter, and editable mapping controls.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
◎NicheUnusually specific use
◉HumanPersonal, local, civic, or handmade
One card from the complete issue