QuestPDF

QuestPDF (by Marcin Ziabek) is a modern, code-first PDF generation library for .NET. Instead of templates or HTML conversion, documents are described with a fluent C# API — a composable layout engine with pages, rows, columns, tables and text flow, rendered through SkiaSharp. It also ships a Companion App for live preview and layout debugging.

QuestPDF started as a straightforward MIT project. On 12 February 2023 Marcin Ziabek opened discussion #491 proposing a hybrid licensing model, a pricing page went live in April 2023, and the split license shipped with the 2023.4 release (on NuGet 4 May 2023).

What Changed

QuestPDF moved from plain MIT to a three-tier split license: Community MIT, Professional, and Enterprise. Every tier gets the same library — all features, commercial usage, unlimited closed-source projects, royalty-free redistribution. What differs is who is eligible for the free tier and what support comes with the paid ones.

"The library is still open-source, fully featured, and free for commercial usage (via the MIT license)."

- Marcin Ziabek (Source)

Two properties make this milder than most changes tracked on this site:

• No license key, no network calls. You declare your tier in code at startup — QuestPDF.Settings.License = LicenseType.Community; — and nothing is transmitted or validated remotely.
• Releases are governed permanently by the license shipped with them. Terms for a version you already use cannot change retroactively; any future change applies only to future releases. Releases up to 2023.3 are therefore MIT-only forever.

The licensing terms have been revised since; the current License Selection Guide is v3.0, effective 6 July 2026.

Who Pays and How Much

Community (MIT) — free, for:

• Individuals, and learning or evaluation use.
• Organizations with annual gross revenue under USD $1,000,000.
• Charitable organizations with a public-benefit mission.
• Academic institutions (non-profit or publicly funded).
• Open-source projects under an OSI-approved license.
• Users of libraries that depend on QuestPDF internally.

Not eligible for Community, regardless of revenue: publicly traded companies, and public-sector entities / government agencies other than academic institutions. This is the clause most likely to catch a team by surprise — a small government department under $1M is still expected to buy a license.

Both paid tiers are effectively perpetual with renewable support: you keep the permanent right to every version released during your paid term, nothing disables if you stop renewing, and continuous renewals lock your price. There is a 30-day money-back guarantee.

What This Means For You

• Individual, hobby, OSS, or company under $1M revenue: free under Community MIT. Set LicenseType.Community and move on.
• Company over $1M revenue: budget from $1,999/year for Professional.
• Publicly traded company or government agency: you need a paid license even below the revenue threshold — check this before shipping.
• Already using QuestPDF on an old version: releases up to 2023.3 stay MIT-only permanently; nothing is retroactive.

Alternatives

1. Pin a pre-2023.4 release of QuestPDF:

   • Everything up to 2023.3 is MIT-only, permanently.
   • Pros: zero code change, no eligibility questions.
   • Cons: three years of layout-engine, font and performance work missed; no security fixes; SkiaSharp and .NET target updates stop.

2. PDFsharp / MigraDoc (empira Software):

   • MIT, no revenue threshold, no tiers, no asterisks. PDFsharp handles low-level PDF creation, editing and merging; MigraDoc adds automatic text flow and document-level layout.
   • Pros: genuinely permissive, mature, .NET 8/9/10 and .NET Framework support.
   • Cons: the API is considerably lower-level and more verbose than QuestPDF's fluent layout engine; MigraDoc's layout model is dated by comparison.

3. HTML → PDF via a headless browser — PuppeteerSharp (MIT) or Playwright for .NET (MIT):

   • Render an HTML/CSS template with Chromium and print to PDF.
   • Pros: free, reuses web skills and existing templating, excellent typography and CSS support.
   • Cons: ships a browser (hundreds of MB) into your deployment, slower per document, awkward in constrained containers, and page-break control in CSS is fiddly.

4. iText 7 for .NET:

   • Dual-licensed AGPL-3.0 or commercial.
   • Pros: extremely capable, strong PDF/A and digital-signature support.
   • Cons: AGPL is a non-starter for most closed-source products, so in practice this is a commercial purchase — usually a more expensive one than QuestPDF.

5. Commercial suites — IronPDF, Aspose.PDF, Syncfusion PDF:

   • If you are buying anyway, these compete on features rather than licensing. Syncfusion also has a community license for small teams and individuals.

Conclusion

QuestPDF is not a "went commercial" story so much as a means-tested one: the library is unchanged, the terms are clear, there is no key and no phone-home, and old releases stay MIT forever. Free for individuals, OSS, non-profits, academia, and any company under $1M annual revenue — from $1,999/year above that, and for publicly traded companies and government agencies regardless of size. If you need an unconditionally permissive PDF library, PDFsharp/MigraDoc is the MIT answer, at the cost of a much lower-level API.

Links and References

• Discussion: QuestPDF development and licensing opportunities (#491)
• QuestPDF: License Selection Guide · Community License · Pricing · License configuration
• GitHub: QuestPDF/QuestPDF
• Blog: Quest for a permissively licensed PDF library in C#
• Alternative: PDFsharp & MigraDoc
• Alternative: PuppeteerSharp · Playwright for .NET
• Similar model (revenue-threshold free tier): MassTransit