html4pdf vs QuestPDF
QuestPDF changed what building a PDF in .NET feels like, and the hot-reload preview is genuinely better than anything on the web side. The question is only whether the document should be written twice.
The short answer
QuestPDF is excellent for documents you are happy to describe in C#. If the document already exists as a web page, you would be rebuilding it, and that duplication is the whole cost.
What QuestPDF is
QuestPDF is a modern .NET library for composing PDFs with a fluent C# API: containers, rows, columns, text styles, with a companion previewer that updates as you type. Output is real text and vectors. It is open source with a community licence that is free below a stated annual revenue threshold, and paid above it.
Side by side
| QuestPDF | html4pdf | |
|---|---|---|
| What you write | C#, a fluent layout API | The HTML and CSS you already have |
| Developer experience | Excellent, with a live previewer | Edit the page, send it |
| HTML input | No | Yes |
| Reusing your web design | No, rebuilt in C# | Yes |
| Who can change the layout | A .NET developer | Anyone who can edit a template |
| Licence | Free below a revenue threshold, paid above | Pay per document |
| Dependencies | A NuGet package | An HTTPS call |
| Speed | Very fast, in process | Three to five seconds including the round trip |
Choose QuestPDF when
- The document is built for print and has no web equivalent.
- You want hot-reload previews while designing it.
- Nothing may leave the process.
- You are under the revenue threshold, or happy to pay the licence.
Choose html4pdf when
- The invoice or report already exists in your web app and should match it.
- You do not want the document layout to be a C# rebuild that drifts from the UI.
- Your stack is more than .NET and you want one approach across it.
- You would rather not track a licence threshold as the company grows.
See the code
The working example, in the language this decision is being made in.
QuestPDF: common questions
Is QuestPDF free?
The community licence is free below a stated annual revenue threshold, with paid licences above it. Check the current terms on their site before you build on it, since thresholds change.
Can QuestPDF render HTML?
No. You describe the document with its C# API. That is a deliberate design choice and it is why the output is so predictable.
QuestPDF or IronPDF?
QuestPDF if you are happy to build the document in code. IronPDF if you need HTML rendered in process and can pay for a commercial library. An API if you need HTML rendered and would rather not.
Does it work on Linux containers?
Yes. It is a .NET library with no native browser dependency, which is one of its advantages over the Chromium-based options.
Try it before you decide
New accounts get 10 free credits, no card. Send the HTML you already have and compare the output against whatever you are using now.
Other comparisons
- html4pdf vs PuppeteerRun Puppeteer yourself if PDFs are high volume and you already operate containers. Use an API if PDFs are a feature of your product and you do not want Chrome in your deployment.
- html4pdf vs wkhtmltopdfwkhtmltopdf is still fine for simple documents you already have working. For anything new, or anything using modern CSS, its archived WebKit engine is the problem you will eventually hit.
- html4pdf vs WeasyPrintIf your document is HTML and CSS with no scripts, WeasyPrint is excellent and free, and you should use it. If anything on the page is drawn by JavaScript, you need a browser.
- html4pdf vs DompdfDompdf is the right answer for a simple document on shared hosting with no extra services. It is the wrong answer for anything designed with modern CSS, because it implements CSS 2.1.
- html4pdf vs jsPDF and html2canvasjsPDF with html2canvas is free and needs no backend, and it produces a picture of your page rather than a document. If the text has to be selectable, searchable or printable at quality, it is the wrong tool.
- html4pdf vs @react-pdf/rendererUse react-pdf when the document is small, stable, and worth building as its own component tree. Use a renderer when the PDF should be the same thing your users already see on screen.
- html4pdf vs printing from the browserIf the user is the one who wants the PDF and is sitting in front of the page, use window.print() and a print stylesheet. If your system needs the file, you need a renderer.
- html4pdf vs PlaywrightPlaywright is the better browser automation library. It is not a better PDF pipeline, because the cost was never the library: it is operating the browser. Use it if you already run it, call an API if you do not.
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- html4pdf vs GotenbergGotenberg is the right answer if you want this capability inside your own infrastructure and have somewhere to run a container. We are the right answer if you want it without running anything.
- html4pdf vs mPDFmPDF is the best free answer in PHP for long, table-heavy documents written as documents. It is still its own engine, so a design built in a browser will not arrive intact.
- html4pdf vs ReportLabReportLab is the right tool when the document is a fixed, precise artefact and you want no dependencies. It is the wrong tool when the design changes often, because every change is a code change.
- html4pdf vs iTextIf you need deep PDF manipulation on the JVM and can accept AGPL or buy a licence, iText is the strongest tool available. If you only need HTML turned into a document, the licence question is one you can skip entirely.
- html4pdf vs PDFKitPDFKit is a good fit for simple, fixed documents generated at volume, where no browser and no network is worth writing the layout by hand. Beyond that the hand-written layout becomes the problem.