Best PDF Generation APIs for Developers in 2026

Generating PDFs programmatically is a solved problem — there are dozens of APIs. But most were designed before AI agents existed as a use case. Here's how the major players stack up in 2026.

What matters for AI agent workflows

• Simple REST API — no SDKs required; agents call HTTP directly
• Predictable pricing — token or per-call, not monthly seats
• Speed — agents are often in a user-facing loop; latency matters
• HTML input — LLMs generate HTML naturally; avoid PDF-specific DSLs

AgentGen

Best for: AI agents and automation scripts.

Token-based pricing ($9 for 500 tokens, 2 tokens per PDF page). Simple REST API with just an API key header. Built on headless Chrome so any valid HTML renders correctly. No monthly commitment.

Pricing	From $0.018/request
Input	HTML string
Latency	~1–2s for simple docs
SDK required	No

DocRaptor

Best for: Publishers needing precise CSS print layout (Prince engine).

Monthly subscription starts at $15/month for 125 docs. Uses the Prince HTML-to-PDF engine which supports advanced CSS print features. Overkill and expensive for agent workflows.

PDFShift

Best for: Small teams with predictable monthly volume.

Subscription-based ($19/month for 250 conversions). REST API, good HTML support. Per-month credits don't roll over — wasteful for bursty agent workloads.

Puppeteer / Playwright DIY

Best for: Teams that want full control and have infra to manage.

Free but requires running and scaling your own headless Chrome infrastructure. Cold starts, memory management, and concurrency are all your problem. High operational overhead.

Verdict

For AI agent use cases, the token-based model wins. Agents generate PDFs in bursts — sometimes 50 in a minute, then nothing for hours. A monthly subscription wastes money during idle periods. Pay-as-you-go tokens match the workload perfectly.

AgentGen is purpose-built for this pattern: simple API, no monthly commitment, HTML input, and a CDN link back in under 2 seconds.

See AgentGen pricing →