How I built an invoice extraction API that works on any PDF layout

How I built an invoice extraction API that works on any PDF layout I kept running into the same problem on client projects: invoice processing. Every solution required templates: one per supplier, one per layout. Every time a vendor updated their invoice design, something broke. I was maintaining 40+ templates across different projects and it was a nightmare. So I built Parzo, an API that takes any invoice PDF and returns structured JSON. No templates, no configuration, no training data. How it