What this tool does
PDF to HTML converts a PDF into a single, self-contained HTML document that looks essentially identical to the source PDF in any browser. The output is one HTML file with no external dependencies — images, text, and positioning are all baked in.
Input limits
- Single file per conversion
- Up to 100 MB per upload
- Digital (text-based) PDFs give the best results
How the conversion actually works
This is deliberately a two-layer design, not a text-reflowing HTML converter:
- Background layer (JPEG) — each PDF page is rendered to an
image at 150 DPI (JPEG quality 70), then embedded in the
HTML as an inline base64
<img>with absolute positioning. This is what the viewer sees. - Invisible text overlay — on top of each page's JPEG we
place an absolute-positioned
<div>per text line with the correct font size and position, but with CSS that makes it invisible. This overlay is what the browser picks up when you select text, use find-in-page, or when a screen reader walks the page.
The result: visual fidelity matches the PDF closely, and the text is still selectable / searchable / screen-reader-accessible despite the visible layer being an image.
Why this design?
The alternative (reflowed HTML text rendered by the browser) is what most "convert PDF to HTML" tools do, and it always looks subtly different from the original — fonts fall back, spacing shifts, columns collapse. For archival, reports, and documents where the PDF's visual layout matters, the JPEG-plus-overlay approach preserves what you actually see.
Side-effects of this approach
- Output is not responsive. The HTML uses absolute positioning, so narrow mobile screens require horizontal scrolling. This is intentional — respecting the source layout is the whole point.
- Output size scales with page count. Each page is a JPEG roughly 50-200 KB. A 100-page PDF produces a 5-20 MB HTML file.
- Text isn't re-flowable. You can select and copy, but you can't re-format the document as a regular web page. If you need that, use Extract Text or PDF to Word.
- Scanned PDFs — the text overlay needs extractable text from the source. Image-only scans won't produce a searchable overlay; the page JPEG will still render visually. Run through OCR first to add a text layer.
When to use PDF to HTML vs other tools
| Need | Use |
|---|---|
| Self-contained HTML that looks like the PDF | PDF to HTML (this tool) |
| Editable document with reflowable text | PDF to Word |
| Just the text content | Extract Text |
| Tabular data | PDF to Excel |
Privacy and file handling
Your PDF is uploaded over HTTPS, processed, and both the source and the generated HTML are deleted from our server once your download is complete. If you close the tab mid-conversion the job is cancelled and working files are swept up by the background cleanup service.