PDF Generation Service (Node.js, Puppeteer, Boto3, Redis, Docker, TypeScript) overview

A scalable document generation service that renders HTML templates into pixel-perfect PDF documents for invoices, reports, certificates, and regulatory filings. Puppeteer drives headless Chromium instances to render complex layouts with CSS grid, web fonts, and SVG charts that match print-quality expectations. TypeScript powers the template engine with type-safe data binding and Handlebars-based layout composition. Boto3 stores generated PDFs in cloud object storage with presigned download URLs and configurable retention policies. Redis manages the job queue for asynchronous generation requests, deduplication of identical renders, and caching of recently generated documents. Docker containers provide isolated Chromium sandboxes with memory limits to prevent runaway rendering. The tradeoff is Chromium memory consumption per concurrent render and ensuring consistent font rendering across container environments.