# Barcode Generator

> Free barcode & QR code generator with a JSON/HTTP API: 13 symbologies, PNG/SVG/PDF output, validation with check-digit auto-complete, image decoding, and batch ZIP.

## API

- [Generate](https://barcode.donaldmurillo.com/api/generate): GET/POST — type, data, format=png|svg|pdf, size, ec, fg, bg, height, width, show_text
- [Validate](https://barcode.donaldmurillo.com/api/validate): GET/POST — validates data for a type; auto-completes GS1 check digits
- [Decode](https://barcode.donaldmurillo.com/api/decode): POST an image (raw or base64 JSON) — returns format + text
- [Batch](https://barcode.donaldmurillo.com/api/batch): POST JSON/CSV/XLSX — returns a ZIP of generated codes
- [OpenAPI](https://barcode.donaldmurillo.com/openapi.json): full machine-readable schema
- [Spec](https://barcode.donaldmurillo.com/api/spec): supported types, formats, and per-type hints

## Docs

- [API reference](https://barcode.donaldmurillo.com/docs): human-readable endpoint + parameter reference
- [Ways to use it](https://barcode.donaldmurillo.com/uses): Excel, Word, Power Automate, AI assistants
- [Pages](https://barcode.donaldmurillo.com/llm-pages.md): per-screen markdown docs index