HTML to PDF Converter
Paste HTML or drop an .html file and download a fully rendered PDF — everything runs inside your browser, so your markup never leaves your device.
HTML → PDF
Full CSS Rendering
Live Preview
100% Local
Why Convert HTML to PDF?
HTML is the native language of the web. It is fluid, responsive, and designed to reflow to fit any screen. That flexibility is exactly what you want when you are building a website — and exactly what you do not want when you need to deliver a fixed, printable document. A PDF fixes every pixel: the layout, the fonts, the page breaks, and the colours are locked in, so what you sent is what the recipient sees.
Converting HTML to PDF is therefore a routine step in dozens of workflows. Developers generate API documentation, READMEs, and code reports as HTML and need a printable PDF. Marketers build email templates and landing page mockups and want a snapshot for review. Finance teams produce invoices from HTML templates. Analysts turn dashboard exports into shareable reports. Teachers convert HTML lesson plans into handouts. In every case, the HTML is the source and the PDF is the deliverable.
The Web Tool Bazar HTML to PDF Converter does this conversion entirely inside your browser. There is no upload, no server round-trip, no account, and no queue. Your HTML — which might contain proprietary content, internal data, or private markup — never leaves your machine. When you close the tab, the session vanishes and only the PDF you downloaded remains.
How HTML to PDF Conversion Works
The conversion pipeline has four stages, all executed locally by JavaScript.
1. Sandboxed Rendering
Your HTML is loaded into a sandboxed <iframe> using the browser's native rendering engine. That means the preview you see is not an approximation — it is literally how Chrome, Edge, Safari, or Firefox would draw your markup. Flexbox, CSS Grid, custom fonts, gradients, shadows, and media queries all render exactly as they would in a normal tab. The sandbox attribute blocks scripts, so untrusted markup cannot run code or reach back into the parent page.
2. Pixel Capture with html2canvas
When you click "Convert to PDF", the tool walks the rendered DOM inside the iframe and paints it onto an offscreen HTML <canvas> element using the html2canvas library. Every visible box, border, background, and glyph is captured as pixels. The render scale option controls the resolution: a scale of 2× produces a canvas at twice the CSS pixel dimensions, which means crisp text and sharp images in the final PDF.
3. Page Slicing
A web page is one continuous scroll; a PDF is a sequence of fixed-size pages. The tool measures the printable area of the chosen page size (page dimensions minus margins) and calculates how many canvas rows fit on one page. The tall canvas is then sliced into horizontal strips of exactly that height, each strip becoming one PDF page. The "Avoid cutting through text" option adds a small heuristic that nudges the cut point to the nearest whitespace region, which significantly reduces awkward mid-line breaks.
4. PDF Assembly with jsPDF
Each slice is encoded as a JPEG or PNG data URL and stamped onto a fresh page in the jsPDF document. Page numbers are drawn at the bottom of every page, and the title you entered is written into the PDF metadata so that a reader or search engine can identify the document. The finished document is then serialised into a Blob and offered as a download.
How to Convert HTML to PDF — Step by Step
1
Provide Your HTML
Paste markup into the editor, drag an .html file onto the drop zone, or click "Select HTML File". You can also press "Load Sample" to see how the tool works with a realistic document.
2
Watch the Live Preview
The preview iframe updates as you type (with a short debounce). Because the iframe uses the browser's native renderer, what you see is exactly what will be captured. The status line reports the document size and height.
3
Tune the PDF Settings
Choose page size, orientation, margins, render scale, image quality, and background colour. Decide whether you want page numbers, auto-scaling, and smart page breaks. Every option is applied at render time, so you can experiment freely.
4
Click "Convert to PDF"
The tool captures the rendered DOM, slices it into pages, and triggers an automatic download. A progress bar tracks the render, and the result panel reports the final page count, content width, and file size.
5
Re-download Any Time
If you miss the download prompt, click "Re-download PDF" in the sidebar. The generated file is held in memory until you close the tab or load new content.
Real-World Use Cases
HTML to PDF conversion solves practical problems across many roles and industries.
1. Invoices and Receipts
Web applications generate order confirmations and invoices as HTML. Converting them to PDF produces a stable, archivable document that can be emailed, printed, or filed. The PDF format is required by most tax authorities for official records.
2. API and Code Documentation
Developer tools like JSDoc, Sphinx, and MkDocs produce HTML documentation. Converting it to PDF gives the team a printable reference that can be versioned alongside the codebase.
3. Reports from Dashboards
Analytics dashboards render as HTML. A PDF export of the current view is the standard way to share a report with stakeholders who do not have access to the dashboard itself.
4. HTML Email Snapshots
Email templates are built as HTML. Before a campaign goes out, the marketing team converts them to PDF for design review and approval — a PDF looks the same everywhere, whereas an HTML email renders differently in Outlook, Gmail, and Apple Mail.
5. Legal and Compliance Documents
Terms of service, privacy policies, and consent forms are usually authored in HTML. Converting them to PDF creates a tamper-evident, timestamped copy suitable for legal filing.
6. Academic Papers and Assignments
Students and researchers frequently write in Markdown or LaTeX that compiles to HTML. Converting to PDF produces the printable artifact that most institutions require for submission.
7. Web Page Archival
When you need to preserve a web page exactly as it looked at a specific moment, a PDF snapshot is more reliable than a screenshot and far more portable than an MHTML archive.
Best Practices
- Inline your CSS. External stylesheets load only if the server permits cross-origin requests. Paste your CSS into a
<style> block inside the document for guaranteed rendering.
- Embed images as data URLs. Remote images may fail due to CORS or hotlink protection. Base64-encode your images and place them directly in
src attributes.
- Use web-safe fonts or embed them. Custom fonts from Google Fonts or Typekit may not load. If the font matters, embed it as a base64
@font-face rule.
- Set explicit dimensions. Percentage widths without a fixed parent can collapse. Give your main container a defined
max-width so the PDF has a predictable layout width.
- Use CSS page-break rules.
page-break-before: always; and page-break-inside: avoid; give you fine control over where pages split.
- Choose 2× render scale for print. 1× is fine for screen-only PDFs, but 2× produces noticeably sharper text and images when printed.
- Keep the file under a few megabytes of markup. Very large HTML documents can take several seconds to render. Split them into sections if performance becomes an issue.
- Preview before converting. The live preview is your first line of defence against rendering surprises. Fix layout issues there before spending time on the PDF.
Troubleshooting Common Issues
External CSS or images are missing from the PDF.
This is the most common issue and it almost always comes down to CORS. Browsers block cross-origin resources from being captured into a canvas for security reasons. The fix is to inline everything: paste your CSS into a <style> tag and convert images to base64 data URLs. The tool will still render an external resource in the preview if the server allows it, but it may not capture it.
Fonts look different in the PDF than in the preview.
If the font is a web font loaded from a CDN, it may have rendered in the preview but not been captured. Inline the font as a base64 @font-face rule, or switch to a system font stack like -apple-system, Segoe UI, Roboto, sans-serif, which the browser always has available.
Content is cut off at the right edge.
The content is wider than the printable area. Either switch to landscape orientation, reduce the page margin, enable "Auto-scale to page width", or add max-width: 100% to wide elements in your HTML. Tables and long code blocks are the usual culprits.
Page breaks cut through a paragraph or image.
The "Avoid cutting through text" option nudges page breaks to nearby whitespace, but it cannot avoid every case. For precise control, add page-break-inside: avoid; to elements you never want split, or page-break-before: always; to elements that should always start a new page.
The output is blurry.
Increase the render scale. A scale of 2× produces a canvas at twice the CSS pixel dimensions, which translates to roughly 144 DPI in the PDF — plenty for screen viewing and acceptable for most printing. Use 3× for high-quality print output.
Background colours or gradients are missing.
Make sure the "Background" setting is not set to "Transparent". Transparent backgrounds drop the page background but should still capture element backgrounds. If a specific gradient is missing, it may rely on a feature html2canvas does not support — try flattening it to a solid colour.
The download did not start.
Click "Re-download PDF" in the sidebar. The generated file is held in memory until the tab is closed, so you can download it as many times as you need.
Frequently Asked Questions
Is my HTML uploaded to a server?
No. The entire conversion runs locally in your browser using html2canvas and jsPDF. Your markup never leaves your device, and closing the tab wipes everything from memory.
Does it render CSS?
Yes. Inline styles, embedded <style> blocks, flexbox, grid, gradients, shadows and most modern CSS features are rendered exactly as the browser draws them. The preview iframe uses the browser's native rendering engine, so what you see is what gets captured.
Can I include external CSS and fonts?
External stylesheets and web fonts load only if CORS permits. For best results, paste the CSS directly into a <style> block and embed fonts as base64 @font-face rules. Images should be data URLs.
What page sizes are supported?
A4, Letter (8.5 × 11 in), and Legal (8.5 × 14 in), in either portrait or landscape orientation, with four margin presets from none to wide.
Does JavaScript in my HTML run?
No. The preview iframe is sandboxed without script execution, which is a deliberate security choice. Static HTML and CSS render perfectly; anything that depends on client-side JavaScript to build the DOM will not appear. If you need dynamic content, render it to static HTML first.
How large can my HTML be?
The tool handles documents up to a few megabytes of markup comfortably. Very large documents may take several seconds to render and capture. Splitting a huge document into sections is usually faster than rendering it in one pass.
Can I control where pages break?
Yes, using standard CSS. Add page-break-before: always; to start a new page before an element, page-break-after: always; to end a page after one, and page-break-inside: avoid; to prevent an element from being split. The "Avoid cutting through text" option also nudges automatic breaks to nearby whitespace.
Does the PDF look different from the preview?
Rarely. The preview uses the browser's native renderer and the capture uses the same engine, so what you see is almost always what you get. Differences are usually caused by external resources that failed to load during capture — images, fonts, or stylesheets blocked by CORS.
Can I convert multiple HTML files at once?
This tool converts one HTML document at a time for clarity and quality control. To process several files, run them individually — each takes only a moment.
Is this tool really free?
Yes — completely free, no signup, no hidden fees, no daily limits, no watermarks. Use it as often as you need.
Final Thoughts
HTML is designed for the screen; PDF is designed for the page. When you need to deliver a fixed, printable, universally viewable document, the Web Tool Bazar HTML to PDF Converter turns your markup into a properly rendered PDF — with full CSS support, configurable page sizes, and precise margin and scale control, all running entirely in your browser.
Whether you are generating an invoice, archiving API documentation, or capturing a dashboard report, this tool handles the job cleanly and privately. Bookmark it for the next time you need it — and explore our other tools like the Excel to PDF Converter, CSV to PDF Converter, JSON to PDF Converter, and Merge PDF, all built with the same privacy-first philosophy.