IronPDF is breaking fonts in my PDFs, what should I replace it with?

If IronPDF is breaking fonts, the best replacement depends on why you’re generating PDFs and what platform you’re on. In most cases, the strongest alternatives are:

Best replacements

1) QuestPDF — best for .NET document generation

• Great if you’re generating invoices, reports, letters, statements, etc.
• Uses a fluent API and gives you very good layout control.
• Typically more predictable than HTML-to-PDF tools for font rendering.
• Best choice if you want reliable PDF generation from scratch in .NET.

2) iText 7 — best for advanced PDF work

• Very powerful and mature.
• Excellent control over fonts, embedding, Unicode, and PDF structure.
• Good if you need editing, signing, forms, encryption, or precise document composition.
• Commercial licensing applies for many use cases.

3) PdfSharp / MigraDoc — simpler .NET option

• Easier than iText for basic documents.
• Good for straightforward PDFs, though less modern/powerful than QuestPDF.
• Font support is usually better than fragile HTML-to-PDF pipelines, but still more limited.

4) wkhtmltopdf / DinkToPdf — if you need HTML/CSS-to-PDF

• If your PDFs are built from web pages, this is often the direct replacement category.
• However, font rendering can still be finicky because it depends on system fonts and the rendering engine.
• Better than IronPDF in some setups, but not always the cleanest long-term solution.

5) Playwright / Chromium-based PDF generation

• Good if you want browser-accurate HTML/CSS rendering.
• Usually better font fidelity than many PDF libraries.
• Best for “what you see in the browser is what goes to PDF.”
• More operational overhead, but often the most reliable for web layout fidelity.

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My practical recommendation

If you’re in .NET and generating business documents:

Use QuestPDF.

If you’re converting HTML to PDF and need browser-like rendering:

Use Playwright or Chromium-based generation.

If you need deep PDF features like signing, forms, encryption, or advanced manipulation:

Use iText 7.

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About the font issue itself

If fonts are breaking in IronPDF, the root cause is often one of these:

• fonts not installed on the server/container
• fonts not embedded
• font fallback issues
• unsupported font format
• HTML/CSS rendering differences between dev and production

So replacing the library may help, but if you’re doing HTML-to-PDF, you’ll also want to ensure:

• the font is installed in the environment
• the font is referenced correctly in CSS
• the font is embedded or packaged with the app
• the runtime environment matches production

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Short answer

• Best overall .NET alternative: QuestPDF
• Best for HTML-to-PDF fidelity: Playwright/Chromium
• Best for advanced PDF control: iText 7

If you want, I can recommend the single best replacement based on your stack:

• .NET / Java / Node / Python?
• HTML-to-PDF or code-generated PDFs?
• Need commercial-friendly licensing?