Generating PDF Invoices with a Single API Call (No Libraries Needed)

If you've ever tried to generate PDF invoices programmatically, you know the pain. Between wkhtmltopdf, Puppeteer, WeasyPrint, and a dozen other tools, there's always something — missing fonts, broken CSS, memory leaks, Docker headaches.

I got tired of fighting PDF libraries, so I built DocuMint — an API that takes JSON and returns a professional PDF invoice.

The Problem

Pick a PDF library (ReportLab? WeasyPrint? Puppeteer?)

Install system dependencies (good luck in Alpine Linux)

Write an HTML template

Handle fonts, encoding, page breaks

Debug rendering differences between your machine and production

Maintain all of this forever

Or you can make one API call.

The API Call

curl -X POST https://documint.anethoth.com/api/v1/invoice \ -H 'Authorization: Bearer YOUR_API_KEY' \ -H 'Content-Type: application/json' \ -d '{ "template": "modern", "currency": "USD", "company": { "name": "Acme Corp", "address": "123 Main St" }, "customer": {…