Blob

A quip.apps.Blob instance allows the app to store some binary data with Quip that can be accessed either via URL or as an ArrayBuffer. Blobs can be created either by passing in an ArrayBuffer of binary data or by showing a file picker to the user and allowing them to upload a file from their machine.

All data that is larger than 1mb or so should be stored in a quip.apps.Blob rather than written directly to models.