EasyInvoicePDF addresses a common friction point in invoicing: getting a professional, customizable invoice preview in real time without uploading sensitive data to a server. It achieves this by generating PDF invoices entirely in the browser with React, TypeScript, and Next.js, eliminating latency and privacy concerns tied to server-side rendering or file uploads.
Browser-based invoice generation with Next.js, React, and @react-pdf/renderer
At its core, EasyInvoicePDF is a frontend-focused invoice generator built with a modern JavaScript stack. The app uses Next.js as the React framework and is written in TypeScript, which adds type safety to help catch bugs during development.
Styling is handled with TailwindCSS, providing a utility-first CSS framework to keep the UI responsive and customizable without the overhead of heavy CSS frameworks.
The standout technical choice is the use of @react-pdf/renderer for client-side PDF generation. This library acts as a React renderer that produces PDF documents directly in the browser’s JavaScript environment, without relying on any server processing.
This means as users input invoice data, the app can render a live preview of the PDF invoice instantly. The preview updates on-the-fly without waiting for a server roundtrip or uploading sensitive invoice details anywhere. This approach addresses both performance and privacy concerns.
EasyInvoicePDF supports generating multi-page invoices with automatic pagination, which is important for longer invoices that exceed a single page. It also supports QR code generation to embed payment or contact information directly into the invoice, adding modern payment conveniences.
The app includes multiple invoice templates, including a Stripe-inspired design, offering users options to match their branding or preferences.
It supports over 10 languages and more than 120 currencies, making it suitable for a global audience needing invoicing solutions that fit local conventions.
Technical strengths and tradeoffs of client-side PDF creation
The most distinguishing aspect of EasyInvoicePDF is how it handles PDF generation entirely client-side using @react-pdf/renderer. This library is a React renderer that converts JSX components into PDF documents, operating fully in-browser.
This approach has clear advantages:
- Instant feedback: Users see invoice updates immediately as they type, which improves the user experience and reduces errors.
- Privacy: Invoice data never leaves the client unless explicitly shared or stored, reducing risks associated with uploading sensitive financial data.
- Simplified backend: Since PDF rendering is client-side, no complex server-side PDF generation logic or infrastructure is needed.
However, there are tradeoffs:
- Performance constraints: Client-side PDF rendering depends on the user’s device capabilities. On low-end devices or very large invoices, rendering might be slower than server-side solutions.
- Limited server integration: While the client-side approach excels in privacy and responsiveness, it requires additional backend services for extended features like emailing invoices or cloud storage.
To address extended use cases, EasyInvoicePDF optionally integrates with several backend services:
- Resend: For sending invoices via email.
- Upstash: For caching and queuing operations.
- Google Drive API: For cloud storage and backup of invoices.
- Telegram Bot API: To allow invoice sharing via Telegram links.
These integrations are optional, ensuring the core app remains privacy-focused and functional offline or without backend dependencies.
The project is dual-licensed under AGPL-3.0 and a commercial license. This means it is open source under AGPL for community use but offers a commercial license for proprietary use cases, which is a practical choice for monetization while keeping community contributions alive.
Quick start
To get EasyInvoicePDF running locally for development, the README provides a minimal quick start:
- Run `pnpm i`
- Copy `.env.example` to `.env.local` (`cp .env.example .env.local`)
- Run `pnpm run dev`
For full functionality, you’ll need to configure API keys and credentials for the optional backend services like Resend, Upstash, Google Drive API, and Telegram Bot API.
This setup keeps the dev experience lightweight and straightforward, relying on pnpm for package management, which is faster and more efficient than npm or yarn in many cases.
verdict: who should consider EasyInvoicePDF
EasyInvoicePDF is a solid choice if you need an invoice generator that delivers instant live PDF previews without server uploads. Its in-browser PDF rendering is a good fit for freelancers, small businesses, or anyone concerned about data privacy and latency.
The multi-language and multi-currency support makes it suitable for international users needing localized invoices.
However, if your use case demands heavy server-side invoice processing, complex workflows, or integration into large backend systems, the client-side-only rendering approach might feel limiting. You would need to implement or rely on the optional backend integrations for features like emailing or cloud storage.
The dual licensing model is fair and typical for apps balancing open-source community and commercial viability.
Overall, EasyInvoicePDF shows that client-side PDF generation with @react-pdf/renderer can work well for responsive, privacy-conscious invoicing. It’s worth exploring if you want to avoid server-side PDF complexity and prioritize user experience with immediate feedback.
→ GitHub Repo: VladSez/easy-invoice-pdf ⭐ 802 · TypeScript