HTML to PDF lays out a block of HTML source, or a saved .html file, as a PDF. The source goes through DOMPurify first — scripts, external stylesheets and event attributes are removed, while inline <style> blocks, images and tables stay — and is then rendered inside a sandboxed iframe; the whole page is captured as a bitmap and cut into sheets. The “Rendered preview” on the right is exactly what will be captured, with its width already worked out from the paper and the zoom.

It cannot fetch a page by URL: the browser's cross-origin rules do not allow a page to read another site directly. The route is to use “Save as” on the target page, or to copy the source and paste it here. When the content is Markdown to begin with, “Markdown to PDF” has better default styling.

1. 01Provide the HTMLpaste source on the left, or upload a .html or .htm file (UTF-8); the file name becomes the PDF name.
2. 02Watch the previewthe “Rendered preview” on the right shows the sanitised result inside the isolated sandbox, and its width follows the paper, orientation, margins and zoom in real time.
3. 03Set the export optionspaper A4 or Letter; portrait or landscape; margins 4 to 30 mm (12 by default); page zoom 50 to 150% (100% by default — the smaller the value, the more fits on a page).
4. 04Generateclick “Generate and download PDF” and the progress runs through “sanitising and rendering HTML”, “waiting for images”, “generating page bitmaps” and “assembling PDF”, then downloads <file-name>.pdf (web-page.pdf when no file was uploaded).

Input

pasted source or a .html or .htm upload; there is no URL field and no remote fetching, and external CSS and JS referenced from the source are not loaded.

Sanitising

<script>, inline event attributes such as onclick, <iframe> and linked stylesheets are removed; content that depends on scripts (a charting library, say) comes out blank in the PDF.

Images

data: images are reliable; a remote image needs its server to allow cross-origin reads (CORS), otherwise the space is left blank, and the wait is capped at 8 seconds.

Output shape

a full-page bitmap (JPEG) that is then cut into pages, so the text cannot be selected or searched; breaks land at near-blank lines; the rendered height is capped at about 60,000 px and a longer page is truncated.

What it does not do

it does not keep hyperlinks clickable, does not create bookmarks and does not honour CSS @page rules; for a PDF with selectable text, use the browser's own “Print → Save as PDF”.

The HTML source is sanitised, rendered and turned into a PDF in the browser, and is never uploaded to any server. Remote images referenced from the source are requested by the browser directly from the server that hosts them; if you want no external requests at all, switch the images to inline data: URLs.