DeckCompare

Compare any two MTG decklists, right on the deck page.

Shared cards, exclusives, quantity gaps and a similarity score, side by side. Works across nine deck sites, Moxfield, Archidekt and ManaBox among them. Free, no account, nothing collected.

Chrome Web Store Edge Add-ons Firefox Add-ons Safari · soon

Brave, Opera, Vivaldi and Arc install it from the Chrome Web Store.

What you get

The results page: two decks, their similarity and the cards unique to each — The full breakdown in one tab: exclusives as card grids, shared cards with their quantity gaps.

The Compare button and its panel on an Archidekt deck page — A Compare button in each site's own toolbar: pick the second deck from your open tabs.

Cross-compare: card usage across a set of decks — Cross-compare a whole archetype: most-played cards, average decklist, mana curve.

No copy-paste. The extension reads the deck from the page you are on, so a Moxfield list compares to an mtgtop8 one in one flow.
Every figure follows your filter. Commanders, mainboard or sideboard: the score and the counts are recomputed for what you look at.
Private by design. No account, no analytics, no server: everything runs in your browser.