LiveSplit supports the generic Splits.io Exchange Format, so Splits.io can read files exported from LiveSplit in this format. These files have the extension
Splits.io also has limited support for reading LiveSplit's proprietary format. These files use the extension
LiveSplit supports the Splits.io Exchange Format, so it can read any run on Splits.io. Look for "Splits.io Exchange Format" when exporting a run from Splits.io.
Splits.io can also try to export runs in LiveSplit format. Look for "LiveSplit" when exporting a run from Splits.io.
You can request runs from the API in LiveSplit format using this header:
Runs returned in LiveSplit format include the header: