docs-site/ankimobile/collection-transfer.mdx
If you don’t have regular internet access, it’s still possible to copy your collection back and forth between devices, though the process is not as convenient.
Collection transfer works by importing or exporting all your
decks at once, in a special file called collection.colpkg.
You can export that file on one device, copy it to another device, and
import it there.
When you import a collection file, any existing content you have is replaced with the contents of the file - it is a one-way transfer from your other device.
This means that unlike syncing via AnkiWeb, you can’t make changes from two locations at once and then merge them - you need to make sure you’ve imported any recent changes from your other device before you make changes, or you’ll end up losing the changes made on one device.
A workflow you would typically use is to export your collection from your mobile device and import it into the computer version, make modifications (such as importing a shared deck you downloaded to your computer), and then export your collection and import it back into your mobile device.
On your computer:
Open the computer version of Anki.
Choose File>Export from the menu.
Click the Export button. Make sure to leave "All decks" and "Include scheduling information" turned on.
Anki will automatically create a collection.colpkg file on
your desktop. If the file is named something else like
deckname.apkg, please see the previous step again. If it
is called collection.apkg, that will work - your Anki version
is just old.
If your devices are on the same wifi network and signed in to iCloud, you can
use the AirDrop option in Finder to
AirDrop the collection.colpkg file
to your mobile device.
If you do not have access to AirDrop, you can use Finder or iTunes to drop the .colpkg file into Anki's file sharing area.
If you AirDropped the file, AnkiMobile should have automatically popped up and imported the file when you accepted it.
If you transferred the file via iOS file sharing, go to AnkiMobile's deck list screen, and then:
Tap the Add/Export button on the bottom left.
Choose Import from iTunes, then confirm the replacement.
If you receive a message about "No file found to import", please
check to make sure you put the collection.colpkg file in AnkiMobile's
file sharing section.
Once complete, the decks on your device will have been replaced with the decks from your desktop.
When you import a collection.colpkg file, Anki will avoid
copying any sounds or images if they already exist on your mobile
device, and are the same file size. This will make imports after the
first one considerably faster if you have a lot of media files.
On AnkiMobile, tap the Add/Export button on the bottom left of the decks list.
Then on your computer:
Connect your Apple device to your computer via the USB cable.
Open Finder or iTunes.
Locate Anki’s file sharing section with Apple’s instructions.
Drag the collection.colpkg file from Finder or iTunes to your
desktop.
Use File>Import in Anki to import the file.
After importing, you can delete the file on your desktop if you wish.