# Frequently Asked Questions
Here is a list of frequently asked questions from our users since some data can be nuanced.
- Which file should I use for my project?
- Which file formats should I use for my project?
- Where does the data come from?
- How much does MTGJSON cost?
- How can I help, report a bug, etc?
- How often is the data updated?
- Can I verify the downloaded files?
- How do I access a card's imagery?
- How do I find the other card faces of "Meld" cards?
- What information is in AtomicCards?
- Why is the file I just downloaded out of date?
- Why is the website out of date or giving me errors?
# Which file should I use for my project?
In most cases, AllPrintings is the correct file. It contains all data for every printing of each card organized by set. Alternatively you can browse the per-set json files or download database images.
Note that the json files are minified, and not really human-readable: use a software like JQ (opens new window) to parse and process them.
# Which file formats should I use for my project?
We recommend downloading the compressed files and unpacking them on your local/remote drive. This is be faster than downloading just the pure JSON files.
# Where does the data come from?
Data is collected from a variety of sources, including Gatherer, Scryfall, TCGplayer, and many more. If you want to know more, or you would like to help, jump on our Discord (opens new window)!
# How much does MTGJSON cost?
MTGJSON is free and open source under the MIT License. If you find it useful, please consider helping us to keep the lights on and develop new features for you with a donation to the project via PayPal (one-time donation) or via Patreon (recurring donations).
# How can I help, report a bug, etc?
You can contribute to the project through the main MTGJSON repo (opens new window) or the MTGJSON website repo (opens new window). If you are a data provider and would like to integrate your data with us, please join our Discord (opens new window).
# How often is the data updated?
Full builds are available weekly at Tuesday, 12:01AM ET, but prices are available daily at 12:01AM ET. Also, when a new set is being previewed, that set will be rebuilt daily until the set is released.
# Can I verify the downloaded files?
Yes. Every file has a SHA-256 file available at the same API location with an appended
# How do I access a card's imagery?
While we do not offer card images directly through MTGJSON, we recommend getting card images through Scryfall or Gatherer API's using the MTGJSON a property from the Identifiers data model within the Card data model.
Gatherer may not have all images. If a
multiverseIdis missing, the imagery will not exist there.
For Scryfall, to access another face of a card, such as for transform or meld cards, add
&face=backto the url to get the respective image.
# How do I find the other card faces of "Meld" cards?
The most effective way to get the other cards for "Meld" cards is to access the
otherFaceIdsproperty of any of the "Meld" cards. This property will return two
uuidvalues for the other associated cards.
Depending on your use case, this can be enough data to get the information you need, otherwise you can use those cards to access their
otherFaceIdsto get the card you need by comparing the data that you have already.
# What information is in AtomicCards?
AtomicCards only contains oracle information for each card. Any data that is persistent across the printings of a card will be included, such as
convertedManaCost, but anything that pertains to a specific printing of a card will NOT be included, such as
For a full list of properties, see the Card (Atomic) data model documentation. Note that depending on your use case you probably do not need this file, as it can be easily derived from AllPrintings - handle with care.
# Why is the file I just downloaded out of date?
You have probably received a cached version of the file. Try hard-refreshing the website (
CTRL + F5on Windows,
Shift + Command + Ron Mac) and re-downloading to get the newest version.
# Why is the website out of date or giving me errors?
You have probably received a cached version of the website or your browser is not supported. Update to the latest version of your internet browser or try hard-refreshing the website (
CTRL + F5on Windows,
Shift + Command + Ron Mac) and try the action again.