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Convert HTML to PDF

Convert HTML files to PDF format. Upload an HTML file to create a PDF.

Convert HTML files to PDF format. Upload an HTML file to create a PDF.
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Select an HTML file to convert to PDF

Convert HTML to PDF while preserving your layout and styles

When you upload an HTML file to this tool, the page is loaded into a headless Chromium browser running at a 1440x900 viewport. The browser renders your markup, applies CSS, resolves inline styles, and then exports the result as a PDF at 1440x2048 pixels with 16-pixel margins. That rendering pipeline is what separates this approach from basic document converters: the output reflects how the page actually looks in a browser, not a plain text interpretation of your HTML source.

If the Chromium renderer encounters an error, the tool falls back to a secondary engine that processes the file differently. The fallback output may not match the primary render exactly, so well-formed HTML with valid CSS will always produce the most consistent results. Files are processed in server memory and are never written to permanent storage.

How to convert an HTML document to PDF

  1. Go to the HTML to PDF tool page at pdfdeal.com.
  2. Upload your .html file using the file picker or drag-and-drop area.
  3. Click Convert to PDF . The server loads the file into the rendering engine and processes it.
  4. Download the resulting PDF once the conversion is complete.

The entire process runs server-side. You do not need to install any browser extension, desktop application, or plugin. CSS styling embedded in the file via <<style>> tags is applied during rendering, so colors, fonts, spacing, and layout are carried through to the PDF output.

What this tool handles well

The Chromium-based rendering engine supports a broad range of CSS properties because it uses the same layout engine as a modern web browser. The following scenarios produce reliable output:

External resources loaded over the network (remote fonts, remote images, external stylesheets) may not resolve correctly because the renderer operates in a sandboxed server environment. For best results, inline your CSS and encode images as base64 data URIs before uploading.

When to use HTML to PDF versus other conversion routes

Choosing the right tool depends on what the source file actually contains and what fidelity you need in the output. Here is how the main options compare at a technical level:

Common issues and how to avoid them

Most conversion problems come from assumptions the HTML file makes about its environment. The rendering engine does not have access to your local file system or your network, so anything the file depends on externally will not load. The most frequent issues are:

If your output does not look right, the PDF mistakes guide walks through the most common causes and their fixes.

Watch How It Works

See the tool in action with this quick tutorial video:

FAQ

The tool loads your uploaded HTML file into a headless Chromium browser running on the server. Chromium parses the markup, applies any CSS found in inline style tags, performs layout at a 1440x900 viewport, and then exports the rendered page as a PDF. The resulting file reflects the visual output of the browser, not a plain text interpretation of your HTML source code.

Yes, when the primary Chromium engine handles the conversion. The browser applies inline style blocks and injected external CSS before rendering, so fonts, colors, spacing, flexbox layouts, and grid structures carry through to the PDF. If Chromium fails and the fallback engine takes over, CSS support is more limited and the output may differ visually from the primary render.

HTML to PDF renders your file through a browser engine that interprets markup and CSS, producing output that reflects the visual layout of a web page. TXT to PDF uses a canvas-based text renderer that places characters line by line with fixed-width formatting and no styling layer. TXT conversion is appropriate for plain content where appearance does not matter. HTML conversion is appropriate when layout, typography, and visual structure need to be preserved in the output.

RTF files carry formatting instructions inside the file itself, such as bold, italic, font size, and paragraph spacing, which are interpreted by a document conversion engine. HTML files describe layout through markup and CSS, which are interpreted by a browser rendering engine. The two pipelines are separate. Use RTF to PDF for word-processor documents and HTML to PDF for web-based templates or browser-rendered content.

Not reliably. The renderer runs in a sandboxed server environment without access to your local file system or general network resources. Images referenced by relative file paths will not resolve. Remote fonts and external stylesheets may not load depending on network conditions and server restrictions. To avoid missing assets, embed images as base64 data URIs and place all CSS inside inline style tags before uploading the file.

The Chromium engine does execute JavaScript during page load, but scripts that depend on user interaction, timers, or asynchronous network requests may not complete before the export snapshot is taken. Static content rendered on page load should appear correctly. Dynamic content that requires user events or delayed API responses is unlikely to be captured in the final PDF output.

The conversion process has a maximum timeout of 360 seconds. Files are processed in server memory rather than written to disk, so very large HTML files with many embedded assets may approach that limit. If a conversion times out, try reducing the complexity of the file by removing unnecessary scripts, compressing embedded images, or splitting the content into smaller documents before uploading.

Files are processed entirely in server memory and are never written to permanent storage. Once the conversion is complete and the PDF is delivered to your browser, the data is discarded. No copies of your uploaded HTML or the resulting PDF are retained on the server after the session ends.

This tool requires a file upload. It accepts a local .html file, not a URL. If you need to capture a live webpage by entering its address, that is a separate workflow. The HTML to PDF tool is designed for situations where you already have an HTML file saved locally and want to produce a PDF from that specific file's contents.

The renderer uses a 1440x900 viewport during layout, and the PDF output canvas is 1440x2048 pixels with 16-pixel margins on all sides. Screen media queries are emulated rather than print media queries, so CSS rules written for screen display will apply. If your HTML uses print-specific styles in a @media print block, those rules will not be the active set during rendering.

Yes. The tool exposes a REST endpoint at POST /api/tools/html-to-pdf . You can send an HTML file via a multipart form request and receive the PDF in the response. This allows you to integrate the conversion into automated pipelines, build scripts, or backend workflows without using the browser interface. The same rendering engine and timeout limits apply to API requests as to manual uploads.

Differences usually come from unresolved external resources, missing fonts, or the fixed viewport width affecting responsive layouts. The renderer uses a 1440-pixel viewport, so CSS breakpoints designed for narrower screens may not activate. Additionally, if the fallback engine handled the conversion instead of the primary renderer, CSS support is reduced. Check that all fonts and images are inlined, and that your layout is designed for a wide viewport.