PuppeteerSharp renders the page. IronPDF completes the document.

Name: IronPDF
Brand: Iron Software
Availability: InStock
Rating: 4.87 (307 reviews)

PuppeteerSharp hands you the exported PDF and stops. IronPDF keeps going: merging, splitting, encrypting, filling forms, and signing, all from one NuGet package (possible link for copy).

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IronPDF

Why IronPDF?

Get greater performance with half the complexity and tech support that actually help.

Complete Toolkit

PuppeteerSharp: prints HTML to PDF only.

IronPDF: one package that renders, merges, splits, stamps, fills, and extracts.

Result: the whole PDF job in a single dependency.

Zero Download

PuppeteerSharp: pulls a 413 MB Chromium (v148) at runtime; routinely fails in Docker and blows past serverless limits.

IronPDF: ships its rendering engine inside the package (0 MB download).

Result: predictable deploys up to ~90% smaller; no runtime fetch, no Lambda size headaches.

Faster Renders

PuppeteerSharp: ~8.9s cold start (includes the 413 MB pull) and ~2.1s warm on a 2-page invoice.

IronPDF: ~1.8s cold and ~0.98s warm.

Result: ~5x faster cold start (the decisive, repeatable gap); warm stays competitive.

Less Plumbing

PuppeteerSharp: ~18 lines plus browser-lifecycle code, zombie Chromium processes to babysit, ~200 MB per instance to recycle.

PM >Install-Package IronPdf

Install-Package IronPdf

IronPDF: ~12 lines, engine managed for you; thread-safe parallel generation + memory management.

Result: less boilerplate, no browser to nurse, safe concurrency out of the box.

Built-In Security

PuppeteerSharp: no digital signatures, encryption, or PDF/A / PDF/UA (a basic tagged flag at most).

IronPDF: digital signatures, 128/256-bit encryption, VeraPDF-validated PDF/A & PDF/UA.

Result: sign, encrypt, and archive to compliance without extra tools.

Included Support

PuppeteerSharp: community GitHub issues only, no SLA.

IronPDF: email, chat, and phone support with an SLA.

Result: a real channel when a render breaks in production.

1 library instead of 5.

Advanced PDF features come built in, so you skip wiring PuppeteerSharp to a stack of PDF packages. Less code to write, less to maintain.

Stops at export - Render to PDF, then add a separate package to merge, sign, or encrypt

Full document platform - render, merge, watermark, encrypt, and sign in a single API

See what each one really does.

PuppeteerSharp wins on automation, IronPDF on the document itself. Here's the honest split, feature by feature.

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Capability
PDF Conversion
Word / RTF / Markdown / Razor / ASPX to PDF
HTML / URL to PDF
JavaScript in HTML rendered
PDF Editing & Assembly
Merge, split & edit existing PDFs
Create & fill PDF forms
Watermark, stamp & redact
Text & image extraction
Security & Compliance
Encryption & permissions (128 / 256-bit)
Digital signatures
PDF/A & PDF/UA compliance	Tagged flag only, not validated.
OCR for scanned PDFs
Compatibility
.NET (latest + Core) and .NET Framework
Cross-platform (Linux / Windows / macOS)
Docker & cloud (AWS / Azure)	Runs, but ships 413 MB Chromium.

獲得全球數百萬工程師的信賴

One license, no add-ons, enterprise support.

Size it to your team, buy once, build forever. Complete, supported, and predictable.

Try IronPDF Free, 30 Days

License Category
Licensing Model	Open Source (MIT)	Commercial Perpetual
Single Developer	Free (MIT License)	Starts at $999 (Lite) / +$1,999 (OEM add-on)
Team & Enterprise	Free (MIT License)	Starts at $1,499 (Plus) / $2,999 (Professional) / $5,999 (Unlimited)
Support & Maintenance	Community-driven via GitHub Issues	Included/Paid SLAs, Live Chat, and Dedicated Support
Trial & Guarantees	Always Free	30-Day Trial & Money-Back Guarantee

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