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For HTML that needs browser-accurate CSS layout, use a headless browser from Node.js: load the page, generate a PDF with its PDF API, and close the browser. Puppeteer and Playwright both use print CSS media by default; both can be switched to screen media before generating the PDF. Choose PDFKit instead when you want to construct PDF content programmatically, not render an existing HTML page.
Choose the right Node.js approach
The key distinction is whether your input is a web page or a document you want to build from drawing and text operations. A headless browser renders HTML and CSS using browser layout, making it the natural fit for existing pages, templates, and browser-dependent styling. Puppeteer and Playwright both expose a page-level PDF method.
| Approach | Best fit | What the documented workflow establishes |
|---|---|---|
| Puppeteer | Rendering a URL or page in a browser and saving its PDF. | Launch a browser, create a page, navigate, call page.pdf(), then close the browser. PDF generation uses print CSS media by default. |
| Playwright | Browser rendering where you want Playwright’s page API and PDF buffer workflow. | page.pdf() returns a PDF buffer and uses print CSS media by default. Paper formats such as Letter and A4, or width and height in px, in, cm, or mm, are documented. |
| PDFKit | Building a PDF programmatically rather than rendering a web page. | The official guide describes creating a PDFDocument and piping it to a writable Node stream; that guide does not establish HTML rendering. |
The browser libraries require a browser runtime as well as Node.js. The cited documentation does not establish one universal deployment recipe or infrastructure requirement: verify browser installation and runtime compatibility for the specific environment where you deploy.
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Convert a URL to PDF with Puppeteer
Install Puppeteer in your project using its package manager, then create a file such as url-to-pdf.js. The basic flow below follows Puppeteer’s documented pattern: navigate to a URL, write the PDF to a path, and close the browser.
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const puppeteer = require('puppeteer');
(async () => {
const browser = await puppeteer.launch();
try {
const page = await browser.newPage();
await page.goto('https://example.com');
await page.pdf({ path: 'page.pdf' });
} finally {
await browser.close();
}
})();Run it with node url-to-pdf.js. If navigation and PDF generation complete, the resulting file is page.pdf in the current working directory. Replace the example URL with the page you need to capture and choose a destination path appropriate for your application.
The finally block ensures the browser is closed even if navigation or PDF generation throws an error. This matters for scripts that run repeatedly or inside a service: leaving browser processes open can consume resources and interfere with later jobs.
Render screen media instead of print media
Puppeteer documents that page.pdf() renders using print CSS media by default. If the page’s screen stylesheet is the desired output, set the media type before creating the PDF:
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await page.emulateMediaType('screen');
await page.pdf({ path: 'page.pdf' });Put these calls after the page has loaded and before page.pdf(). This changes which media styles apply; it does not mean a PDF is a screenshot of the browser window. Decide whether the document should follow print rules or screen rules, then test the resulting layout with the actual page.
Preserve print colors when needed
Puppeteer’s documentation says PDF output adjusts colors for printing by default. If exact CSS colors matter, it documents the CSS property -webkit-print-color-adjust for retaining them. Apply it in the page’s print styles, for example:
@media print {
html {
-webkit-print-color-adjust: exact;
}
}Use this only when the print color adjustment is not wanted; color fidelity can affect readability and ink use. Confirm the result in the generated PDF rather than assuming the browser’s on-screen appearance will be identical.
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Use Playwright when its API fits better
Playwright’s page.pdf() returns a PDF buffer. That is useful when the application needs to handle the bytes itself rather than having the PDF API write directly to a named path. This runnable CommonJS example writes the buffer to a file using Node’s filesystem API:
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const { chromium } = require('playwright');
const fs = require('node:fs/promises');
(async () => {
const browser = await chromium.launch();
try {
const page = await browser.newPage();
await page.goto('https://example.com');
const pdf = await page.pdf({ format: 'A4' });
await fs.writeFile('page.pdf', pdf);
} finally {
await browser.close();
}
})();Playwright documents Letter and A4 paper formats, and dimensions can be specified in px, in, cm, or mm. The example selects A4; change the format or set dimensions when your document needs another page size. Playwright also uses print CSS media by default. To render screen media, call page.emulateMedia({ media: 'screen' }) before generating the PDF:
await page.emulateMedia({ media: 'screen' });
const pdf = await page.pdf({ format: 'A4' });Use the same browser-lifecycle discipline as in the Puppeteer example: close the browser after the PDF is generated, including when a step fails. Choose between Puppeteer and Playwright based on the browser automation API already used by your project and the way you want to handle PDF output; the documented facts here do not establish that one is universally faster or easier to deploy.
Render HTML you already have
If the source is an HTML string rather than a URL, put that content into a browser page before calling its PDF method. The following Puppeteer example uses a small self-contained document:
const puppeteer = require('puppeteer');
(async () => {
const browser = await puppeteer.launch();
try {
const page = await browser.newPage();
await page.setContent(`
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Report</title>
<style>
body { font: 16px Arial, sans-serif; margin: 2rem; }
h1 { color: #17365d; }
@media print {
html { -webkit-print-color-adjust: exact; }
}
</style>
</head>
<body>
<h1>Monthly report</h1>
<p>This content is rendered by a browser before PDF creation.</p>
</body>
</html>
`);
await page.pdf({ path: 'report.pdf' });
} finally {
await browser.close();
}
})();For a real application, make sure the page content includes the styles and assets it needs. When HTML refers to external images, stylesheets, or fonts, the browser must be able to load them for the rendered document to include them. Puppeteer’s guide says page.pdf() waits for fonts by default; that does not guarantee every other external dependency has loaded successfully.
Choose print layout, page size, and output behavior
Print CSS versus screen CSS
- Use print media when the page has print-specific rules or should follow its print layout. This is the default for both libraries’ documented PDF methods.
- Use screen media when the screen stylesheet is the intended design. Set the media type before calling the PDF method.
- Check color-sensitive pages because Puppeteer documents print-oriented color adjustment by default and a CSS control for retaining exact colors.
Paper format and dimensions
Playwright’s documentation explicitly describes paper formats including Letter and A4, and custom width and height in px, inches, centimeters, or millimeters. Select the format based on the intended reader and use case; do not assume a page designed for a wide screen will fit a portrait sheet without layout changes. For Puppeteer, consult the API documentation for the exact PDF options supported by the version installed in your project; the basic example above intentionally uses only the documented path workflow.
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Saving to disk or handling bytes
Puppeteer’s basic documented example passes a path to page.pdf(). Playwright returns a PDF buffer, which can be written to a file, streamed onward by application code, or otherwise handled as bytes. Choose the output flow that suits the rest of your Node.js application instead of creating an unnecessary intermediate file.
Where PDFKit fits
PDFKit is a PDF-generation library, but the cited official guide establishes a different workflow from browser rendering: create a PDFDocument and pipe it to a writable stream. That is a good conceptual fit when your application constructs the PDF from programmatic content and does not need a browser to interpret HTML and CSS. Do not treat it as a drop-in HTML-to-PDF renderer based on that guide alone.
Or skip the browser setup
If your input is a public webpage and you do not want to manage browser automation in your Node service, ScreenshotNeo offers a website screenshot API that can also return PDFs. Its API and PDF options are documented at ScreenshotNeo docs. The supplied one-request example saves a screenshot image; consult the docs for the PDF response format and request options rather than assuming an undocumented parameter.
const q = new URLSearchParams({ access_key: 'YOUR_API_KEY', url: 'https://example.com' });
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Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Troubleshooting common failures
The PDF uses unexpected styling
Check whether the page’s print stylesheet differs from its screen stylesheet. Both browser PDF methods use print media by default; explicitly emulate screen media before generating if that is the intended output. Also inspect print-specific CSS that hides or rearranges elements.
Colors differ from the browser view
Puppeteer documents that PDF output adjusts colors for printing by default. If exact colors are required, apply -webkit-print-color-adjust: exact in the relevant CSS and inspect the generated PDF. This adjustment is specific to the print rendering behavior documented by Puppeteer.
Fonts or images are missing
Confirm that the assets are available to the browser and that URLs resolve from the machine running the script. Puppeteer says its PDF method waits for fonts by default, but that is not a general guarantee that remote resources load. Check the source page or HTML, network access, and the generated document for missing dependencies.
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The process hangs or consumes resources over repeated jobs
Ensure browser closure runs on both success and error paths. The examples use try/finally for that reason. If navigation itself does not complete in your environment, investigate the page and runtime rather than assuming the PDF method is responsible; the cited documentation does not establish a universal timeout or deployment configuration.
The script cannot launch a browser in production
A headless-browser solution requires both Node.js and a usable browser runtime. Check the chosen library’s official installation instructions and your deployment environment’s browser compatibility. The documentation summarized here does not specify a provider, resource size, or security configuration that applies to every deployment.
Performance, reliability, and cost considerations
Browser rendering is appropriate when layout fidelity to HTML/CSS is more important than avoiding a browser dependency. The cost is operational: the application must launch or manage a browser and ensure the runtime is available where code executes. Reuse patterns, concurrency limits, memory needs, and exact performance depend on the application and environment; the cited documentation does not provide benchmarks, service-level guarantees, or a universal resource estimate.
For reliable jobs, treat navigation, resource availability, PDF generation, output persistence, and browser cleanup as separate failure points. Log the failing stage and retain enough context to identify the URL or input document. Do not report a successful conversion until the PDF bytes have been written or handed to the next stage successfully.
Frequently Asked Questions
Does Puppeteer create a PDF using print CSS or screen CSS?
Print CSS by default. Call page.emulateMediaType('screen') before page.pdf() to use screen media.
Does Playwright write a PDF file directly?
Its page.pdf() method returns a PDF buffer. The example writes that buffer with Node’s filesystem API.
Is PDFKit an HTML-to-PDF library?
The cited PDFKit guide establishes programmatic PDF creation and stream output, not HTML rendering.
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