File.io

Overview

File.io is a free public API in the Cloud Storage & File Sharing category. Super simple file sharing, convenient, anonymous and secure.

This API belongs to the Cloud Storage & File Sharing category, a popular area of the free-API ecosystem for builders.

You can use this API in prototypes, side projects, and production applications — just keep the provider’s usage policy in mind.

Authentication

File.io requires no authentication — you can start calling it directly, which makes it great for quick experiments and client-side demos.

HTTPS & CORS

• HTTPS: not supported — File.io is served over plain HTTP only. Avoid sending sensitive data, and prefer HTTPS endpoints where possible.
• CORS: unknown — if you plan to call File.io from the browser, verify CORS support in the official docs or with a quick test request.

Getting Started

1. Read the official documentation: https://www.file.io
2. Make a test request with curl or your favourite HTTP client.

Rate Limits & Notes

• Rate limits, quotas, and free-tier terms are defined by the provider — always check the official documentation for File.io before scaling up.
• The upstream listing is community-maintained; fields like auth, HTTPS and CORS reflect the state at listing time and may change.

FAQ

Does File.io require an API key?

No — File.io is listed as a no-auth API, so you can call it directly.