File.io vs Pantry

File.io is an anonymous, one-time file-transfer service: uploaded files get a short-lived link that self-destructs after a configurable number of downloads, with a simple REST API returning JSON for uploads and deletions. A live OPTIONS preflight with an Origin header against the real host, www.file.io, returned a 403 with no Access-Control-Allow-Origin header, resolving cors from unknown to no; no API key is required for basic use, and HTTPS was reconfirmed. A free anonymous tier covers casual transfers, while a paid plan raises file-size limits and adds account-based management.

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.