HTML to PDF API Comparison 2026: A Developer's Guide

HTML to PDF conversion is a common requirement in web applications. From invoices and reports to certificates, rendering browser content as pixel-perfect PDFs requires the right tool.

Major HTML to PDF Solutions

1. wkhtmltopdf (OSS)

A command-line tool based on the QtWebKit rendering engine.

Pros:

• Free and open source
• Lightweight and fast
• Simple CLI interface

Cons:

• Maintenance has stalled
• Incomplete CSS Grid/Flexbox support
• Cannot keep up with modern web standards

2. Puppeteer / Playwright (OSS)

Node.js libraries that control headless Chrome.

Pros:

• Full support for modern CSS/JS
• Can also capture screenshots

Cons:

• Chrome installation and management required
• High memory consumption
• Not purpose-built for PDF generation

3. Gotenberg (OSS)

A Docker-based PDF generation API that uses Chromium internally.

Pros:

• One-command Docker setup
• REST API interface
• Full Chromium rendering

Cons:

• Docker required
• Self-managed scaling
• Limited error handling

4. FUNBREW PDF (SaaS)

A managed REST API for generating PDFs from HTML, URLs, and templates.

Pros:

• Zero infrastructure management
• Dual engine (Fast/Quality) support
• Built-in templates, webhooks, and email delivery
• Full CJK font support

Cons:

• Monthly generation limits (plan-dependent)
• External service dependency

Comparison Table

Feature	wkhtmltopdf	Puppeteer	Gotenberg	FUNBREW PDF
CSS Grid/Flexbox	Partial	Full	Full	Full
CJK Fonts	Limited	OK	OK	Excellent
REST API	No	No	Yes	Yes
Templates	No	No	No	Yes
Webhooks	No	No	No	Yes
Email Delivery	No	No	No	Yes
Infrastructure	Self-hosted	Self-hosted	Docker	Managed
Free Tier	OSS	OSS	OSS	30/month

Conclusion

The best choice depends on your project's scale and requirements. If you want to eliminate infrastructure overhead, a managed API like FUNBREW PDF is the most efficient option.

Start free and see for yourself.