base64app.com

Base64 HTTP API

Free JSON HTTP endpoints for decoding, detecting, repairing, and encoding base64 — with OpenAPI spec.

Overview

JSON HTTP API at https://base64app.com for decoding, repairing, detecting file types, and encoding base64. OpenAPI spec at /api/openapi.json.

Endpoints

  • GET /api/health — health check
  • GET /api/openapi.json — OpenAPI 3.1 specification
  • POST /api/decode — decode base64 (alias of analyze)
  • POST /api/analyze — decode, repair, and detect file type
  • POST /api/detect — detect file type from base64
  • POST /api/to-file — decode with file download metadata
  • POST /api/repair — repair base64 without full analysis
  • POST /api/encode — encode text to base64