EDHcheck now keeps your card collection. Find it under My Collection in the Decks menu or your account menu.
Bring it in
Add cards one at a time, picking the exact printing, or import a CSV. Export your collection from Moxfield, Archidekt, ManaBox, Deckbox, Deckstats, Decked Builder or Cardsphere and pick the file, or paste its text. Any other CSV works too: you say which column is which. You can also paste a plain card list, one card a line, with the set code and collector number for the exact printing and *F* for foil: 1 Sol Ring (CMM) 703 *F*.
Every row is matched to its exact printing on Scryfall. If a file doesn't say which printing a card is, the card is added in its usual printing and marked so you can check it, and anything that isn't a real card is listed rather than guessed.
Keep it organised
Each card can record its quantity, finish, condition, language, whether it's altered, signed or a proxy, what you paid and a note. Sort cards into folders, keep a wish list of cards you want, and filter by mana symbols, set, type, rarity, mana value or an exact cost, power, toughness, loyalty, condition, finish and price.
See it as card images or as a list.
A collection holds up to 2,500 different cards, or 10,000 with Pro, the wish list included. Each printing in one finish, condition and language counts once, whatever the quantity, so a playset of Sol Ring is one.
See what it's worth
The top of the page adds it all up: the value in dollars from TCGplayer or euros from Cardmarket, whichever you choose in Settings, how many cards and printings you have, and how many commons, uncommons, rares and mythics. Each folder shows its own value too. Prices are Scryfall's for each printing and finish, refreshed every week.
Share it, or don't
Your collection is private. Share it from the menu and you get a link, and your profile gets a Collection button. A shared collection never shows what you paid or your notes.
From your decks
Right-click any card in a deck, yours or someone else's, and choose Add to collection or Add to wish list.
You can export your collection as a CSV whenever you like, and ManaBox, Archidekt and Deckbox can read it back by each card's Scryfall ID.