API Docs

Overview

HeronTool offers a few free open endpoints, no API key required. Responses are JSON (hash) or data URL (QR).

QR Code GET /api/qr

Param: text (required, max 2000 chars). Returns a PNG data URL. Example: /api/qr?text=https://herontool.com

Hash GET /api/hash

Params: text (required), algo (optional: MD5 / SHA1 / SHA256 / SHA512, default SHA256). Returns {"hash":"...","algo":"..."}. Example: /api/hash?text=hello&algo=SHA256

Usage Limits

Please avoid high-frequency calls. Contact us for bulk usage.