Filestack vs Pantry

Filestack is a file-upload and processing API that handles ingestion from local disk, cloud drives, and URLs, plus on-the-fly transformations like image resizing and document conversion. A live POST against the real gateway, www.filestackapi.com/api/store/S3, returned a 400 without a valid key, reconfirming API-key auth and HTTPS, and a follow-up OPTIONS preflight echoed the request Origin in Access-Control-Allow-Origin, resolving cors from unknown to yes. Filestack starts with a free plan for low-volume use and scales into paid Growth, Pro, and Enterprise tiers as upload and processing volume grows.

Pantry is a free JSON storage service for small projects and prototypes: each Pantry is a namespaced bucket identified by an ID in the URL path, holding arbitrary JSON "baskets" read and written over a plain REST API. A live GET and OPTIONS preflight with an Origin header against the real host, getpantry.cloud/apiv1/pantry/, both returned Access-Control-Allow-Origin: *, reconfirming cors as yes; no API key is required (the Pantry ID itself is the access credential), and HTTPS was reconfirmed. The service is entirely free with no paid tier.