Chromosome Mapping Helper for DNA Painter

Extract chromosome data from MyHeritage and push to DNAPainter

The Chromosome Mapping Helper for DNA Painter makes it easy to copy chromosome segment data from MyHeritage DNA match pages directly into your DNA Painter chromosome maps — with one click. WHAT IT DOES The extension copies chromosome segment data from the MyHeritage DNA match page and copies it to your clipboard, ready to paste into DNA Painter's "Paint a new match" field. HOW TO USE • Open a DNA match page on MyHeritage • Scroll to the bottom so the chromosome browser fully loads • Click "Capture & Copy Segments" in the side panel • In DNA Painter, open your chromosome map → Paint a new match → paste • Optionally paste match details (name, relationship, cM, notes) in the match notes field. Note: some matches do not share chromosome data — in that case there is nothing to copy. This Extension doesn't give you access to more than you already have on either MyHeritage or DNA Painter. It only takes data your browser has downloaded and simplifies the process of moving it from one please to the other. DATA COPIED • Match name and predicted relationship • Shared DNA: total cM, segment count, largest segment • Labels and notes (if loaded) • Full chromosome segment data: chromosome number, start/end positions, cM, SNP count PRIVACY No data is collected, stored, or transmitted to any third party. All processing happens entirely within your browser, from pages you manually choose and load. Segment data is read from your local session and written to DNA Painter only at your explicit request - when you paste it there. LICENSE MIT License DISCLAIMER This is an independent, community-built tool. It is not affiliated with, endorsed by, or associated with DNA Painter (dnapainter.com) or MyHeritage (myheritage.com).