Invoice as a Service vs Factur-X PHP

Simple invoicing REST API — send JSON, get a PDF

A dead-simple invoicing microservice. Send a JSON payload with your invoice data, get back a beautifully formatted PDF. No database, no accounts, no UI — just an API endpoint you can integrate into any stack. Self-hostable, Docker-ready, and perfect for developers who want programmatic invoice generation without a SaaS dependency.

Manage Factur-X and ZUGFeRD 2.0 PDF invoices in PHP

A PHP library for creating and reading Factur-X and ZUGFeRD 2.0 hybrid PDF invoices. These invoices embed machine-readable XML inside a human-readable PDF — the new standard for B2B invoicing in France and Germany. Zero open issues, actively maintained. Handles the painful PDF/A and XML embedding so you can focus on your billing logic.