What is PDF to HTML?

PDF to HTML extracts text, headings, and basic structure from PDF files and converts them into clean, semantic HTML. Useful for making PDF content web-accessible, editable, or searchable.

The parser uses pdf.js to extract text runs along with their position, font size, and weight on each page. Heading detection compares font sizes against the document median and promotes outliers to h1/h2/h3. Body text becomes p tags and paragraph breaks come from vertical gaps. Pick one of six conversion modes depending on whether you want clean semantic HTML, plain paragraphs, an SVG-faithful copy of each page, or pixel-positioned blocks. Encrypted documents are handled too — a password prompt appears when needed.

How to use

1. Upload a PDF file — the tool parses each page and extracts text with positional data.
2. Review the extracted HTML preview and adjust formatting options like heading detection sensitivity.
3. Copy the HTML to your clipboard or download it as an .html file.

When to use

• Migrating product specs, manuals, or whitepapers from PDF into a documentation site.
• Making a printable form or policy searchable on a public website.
• Pulling text out of a research paper so you can quote or annotate passages.

Result

A developer receives a product spec as a 12-page PDF. They upload it here, get clean HTML with proper headings and paragraphs, and paste it into their project wiki for the team to reference.

FAQ

Will images or charts in the PDF carry over to the HTML?

By default only text is extracted, so embedded images, vector charts, and form fields are skipped. Turn on Embed page images and each page is rendered to a picture and dropped into the HTML, so charts, graphics, and even scanned pages carry over. The file stays self-contained — nothing is hosted elsewhere. Higher image quality means a sharper picture and a larger file.

Why does the output sometimes have weird line breaks mid-sentence?

Some PDFs encode text line-by-line with hard line breaks instead of paragraph boundaries. Turn off Preserve Layout and the converter will reflow lines into proper paragraphs based on vertical spacing. Two-column layouts also need that option off.

Does heading detection always pick the right elements?

It works well when the PDF uses larger or bolder text for headings, which is the common case. Documents that style headings with colour or position rather than font size confuse it — toggle Heading Detection off and the whole document becomes p tags you can mark up by hand.

Is the HTML safe to publish directly?

The output is plain semantic HTML with no inline JavaScript, no external scripts, and no inline styles by default. You can paste it into any CMS or static site generator. Wrap it in your own template for typography and you're done.

What about password-protected or encrypted PDFs?

Password-protected PDFs are supported. If the file is encrypted, a password prompt appears after upload — enter it and the document is unlocked and converted right on this page. The password is never sent to a server.

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