Question 1

How does the PDF to HTML converter work?

Accepted Answer

The tool uses the open-source pdf.js library to read your PDF entirely in your browser. It extracts text items along with their x/y positions and font sizes, then rebuilds the page as an HTML document with absolutely-positioned spans that preserve the original layout. You can choose Flow mode (re-flowing paragraphs) or Layout mode (pixel-accurate positioning).

Question 2

Is my PDF uploaded to a server?

Accepted Answer

No. The entire conversion runs locally in your browser using JavaScript and WebAssembly. Your PDF file never leaves your device, which makes this tool safe for confidential contracts, invoices and personal documents.

Question 3

Why is the converted HTML layout sometimes imperfect?

Accepted Answer

PDFs store text as positioned glyphs rather than logical paragraphs, so reconstructing perfect flow is inherently difficult. Layout mode preserves the visual position of every text run (best fidelity), while Flow mode joins text into readable paragraphs that re-flow on mobile. Scanned PDFs without a text layer produce empty output — run them through an OCR tool first.

Question 4

Can I edit the converted HTML?

Accepted Answer

Yes. After conversion, click Copy HTML to put the full HTML source on your clipboard, or click Download .html to save a standalone file you can open and edit in any text editor or browser.