Deloitte • Mahinour Hammam • Sep 22, 2026

Build Once, Use Everywhere: a Scalable PDF Engine in React Native

Article Summary

Mahinour Hammam from Deloitte UK reveals how to build a PDF generation system once and reuse it across your entire React Native app. No more rewriting PDF logic for every new feature.

This technical guide demonstrates how to architect a scalable, template-driven PDF engine using react-native-html-to-pdf and react-native-pdf. The approach combines HTML generators with TypeScript to create dynamic, multi-page PDFs that can be displayed in-app and shared with users.

Key Takeaways

Template-driven architecture separates data models from HTML generation for reusability
Three core libraries handle conversion, display, and sharing of PDFs
Generator functions inject structured data into HTML templates dynamically
Multi-page support through array mapping and content joining
Base64 encryption and custom dimensions enable flexible PDF output

Critical Insight

By architecting a proper template system with reusable generator functions, teams can add new PDF templates without rewriting core logic each time.

The article includes a complete code walkthrough showing exactly how to structure your data models and generator functions for maximum flexibility.

About This Article

Problem

React Native teams kept writing the same PDF code over and over. Every time they needed to handle a new template, developers had to rebuild the conversion, display, and sharing logic from scratch.

Solution

Mahinour Hammam built a template-driven system that uses react-native-html-to-pdf for conversion, react-native-pdf for display, and react-native-share for distribution. TypeScript generator functions inject structured data into reusable HTML templates.

Impact

Teams can now add new PDF templates without rewriting the core logic. This cuts down development time and reduces maintenance work for future PDF features in React Native apps.