HTML to PDF Converter — Free Online, Browser-Quality Output
Convert HTML files to PDF using headless Chromium — the same rendering engine as Google Chrome. CSS styles, backgrounds, gradients, custom web fonts, flexbox layouts, and JavaScript-rendered content (Mermaid charts, D3.js, Chart.js) are all captured exactly as they appear in a browser. No HTML-to-PDF conversion tool produces more accurate output. Supports Letter (US) and A4 page sizes, CSS @media print, and CSS @page rules for custom margins.
- Pixel-perfect PDF — rendered by the same engine as Google Chrome
- Full CSS support: backgrounds, gradients, fonts, flexbox, grid, and print rules
- JavaScript executes before capture — Mermaid, Chart.js, and D3.js render correctly
Frequently Asked Questions
What does this tool actually do?
It opens your HTML file in a headless Chromium browser and captures the rendered page as a PDF. Because a real browser engine does the rendering, the output looks exactly like opening the file in Chrome — including CSS styles, backgrounds, gradients, and JavaScript-driven content such as Mermaid charts.
Are CSS styles preserved?
Yes — fully. Headless Chromium renders the page with all CSS applied before capturing the PDF. Background colors, gradients, custom fonts, flexbox/grid layouts, and print-specific CSS (@media print) are all respected.
Are embedded images preserved?
Yes. Images referenced by relative paths in the HTML file are resolved correctly. If your images are embedded as base64 data URIs, they are included in the PDF with no additional setup.
Is this tool free?
Yes — completely free. No account, no sign-up, no usage limits.
Are my files stored on your servers?
No. Your file is processed in memory and immediately discarded after conversion. Nothing is saved or logged. See our Privacy Policy for full details.
What page sizes are available?
Letter (8.5 × 11 in) and A4 (210 × 297 mm). Both use 1.5 cm margins on all sides. If your HTML uses @page CSS rules they will be honoured by the browser engine.
What are the limits?
Maximum file size is 10 MB. Very complex pages with large JavaScript bundles or many external resources may take longer — the converter waits for the network to go idle before capturing.
Does JavaScript run before the PDF is captured?
Yes. The converter waits for the page to fully load (network idle) and then waits an additional 2 seconds for JavaScript-driven renders — such as Mermaid charts, D3.js graphs, or other dynamic content — to finish before capturing the PDF.
What happens if my HTML references external fonts or stylesheets?
The headless browser will attempt to load external resources referenced in your HTML. Google Fonts and CDN-hosted CSS will be fetched and rendered. If your file uses local relative paths (e.g., ../fonts/myfont.woff2), those will not resolve since only the HTML file is uploaded.
Can I control page margins and page breaks using CSS?
Yes. The converter honours CSS @page rules for custom margins, and page-break-before / page-break-after properties for controlling where pages break. The default margin is 1.5 cm on all sides if no @page rule is specified.
How long does the conversion take?
Most HTML files convert in 5–15 seconds. Pages with many images, large JavaScript libraries, or external network resources may take longer as the browser waits for all content to load before capturing.
I also need to convert HTML to Word. Is there a tool for that?
Yes! Check out HTML to Docx Magic — our companion tool that converts HTML documents to .docx files, with Mermaid and SVG diagrams properly rendered and embedded.