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Guides for every part of MTG Codex: scanning cards, managing a collection, building decks, and sharing what you have. Start anywhere.
Common Questions
What is The MTG Codex?
The MTG Codex is a free Magic: The Gathering web app for managing collections, scanning cards, building and analyzing decks, and playing with friends. It also includes a mobile life and counter tracker for games with physical cards. Card data and regularly updated prices come from Scryfall.
How does the card scanner work?
Point your phone camera at a card and capture. The scanner reads the name, set, collector number, and foil status, and the match appears on your desktop queue in real time for review before anything is added to your collection. There is also an auto-scan mode that captures on its own as you flip through a stack.
Is The MTG Codex free?
Yes. Collection management, scanning, deck building, playtesting, deck suggestions and Pro Analysis are free, with no monthly usage limits for verified accounts.
Can I import my collection from Moxfield or Manabox?
Yes. The MTG Codex imports CSV exports from Moxfield, Manabox, Archidekt, Dragon Shield, EDHREC, Untapped.gg, and any CSV containing Scryfall IDs. Open the Collection page and choose Import CSV.
What deck formats are supported?
Commander (100-card singleton, with partner and Choose a Background detection), Standard, Modern, Pioneer, and Legacy (60-card minimum, four copies max), plus Casual with no restrictions. Card counts, copy limits, color identity, and format legality are all validated as you build.
Does the deck builder know what I already own?
Yes, and that is largely the point. Every card in the builder shows whether you own it, and deck suggestions prioritize cards you own that are not already committed to another deck, so what it suggests is something you can sleeve up tonight rather than something you would have to buy.
Can I playtest MTG decks with friends?
Yes. On a computer, Play lets you goldfish a deck solo, pilot several of your own decks, or invite friends to a multiplayer room with up to four players. Rooms share the battlefield while hands and libraries stay private. The playtest table is in beta and includes a rules helper; some card effects still need manual handling.
What does Play do on a phone or tablet?
On a phone or tablet, Play opens the table tracker for games with physical cards. It supports two to four players and tracks life, commander damage, poison, energy and other counters. The virtual playtest table is designed for computers.