Aisha K.
Mar 12, 2026
Clean layout and the results update instantly. Exactly what I needed for a quick planning check.
Document Converters
HTML to PDF & Markdown to PDF Converter
Instant private PDF tools
Paste HTML or Markdown (or drop a file) and export a paginated PDF. Content is rasterized and sliced across pages with progress updates.
Files never leave your browser
Conversion runs on this device. CalculioHub does not receive uploads of your documents, photos, or media. No account required.
- Your files
- Stay in memory / local processing — not sent to our servers.
- pdf.js / pdf-lib (on-device)
- A PDF worker may load once from unpkg. Your documents are never uploaded to CalculioHub.
Recent job names below are stored locally as text only — never the file bytes.
Mode
Client-side with pdf-lib / jsPDF — nothing is uploaded.
Rasters HTML with html2canvas, then paginates with jsPDF.
Drop a file, or browse
Max 40.0 MB per file · files never leave this browser
Browse filesSize budget0 B / 40.0 MB
Plain-English guide
Terms & how it works
Confused by a field? Read the short definitions here while you use the tool.
- HTML
Markup
Source HTML or Markdown-rendered HTML.
- canvas
Raster capture
Full-height bitmap of the document.
- pages
PDF pages
A4 slices of the captured image.
When to use this HTML / Markdown to PDF
Common use cases
- Merge contracts or split pages before sharing
- Extract text from a PDF for editing
- Build a PDF from text or images privately
Localized examples
- Browser-based PDF workflows for remote teams
- Local document prep without cloud upload
What you get
- Private on-device document handling
- Merge, split, and text workflows
- No account wall
How to Convert HTML / Markdown to PDF Step-by-Step
- 1Choose HTML → PDF or Markdown → PDF.
- 2Paste content or drop an .html/.md file.
- 3Click Convert and wait for the progress bar.
- 4Download the generated PDF.
- 5Clear before starting another document.
Governing formula
PDF = jsPDF.paginate(html2canvas(HTML|marked(MD)))
Markdown is compiled to HTML, then html2canvas captures the layout and jsPDF paginates the bitmap across A4 pages.
Use the defaults, then adjust one input at a time to see the result update instantly—no sign up.
Variable definitions
- HTML
Markup
Source HTML or Markdown-rendered HTML.
- canvas
Raster capture
Full-height bitmap of the document.
- pages
PDF pages
A4 slices of the captured image.
- Runs fully client-side.
- Very long documents may take longer to rasterize.
Frequently Asked Questions
Pages are high-resolution raster slices via html2canvas + jsPDF—ideal for sharing, not editable text PDFs.
Related calculators
Document Converters
- Images ↔ PDF ConverterCombine images into a PDF or extract every PDF page as PNG/JPG images in a ZIP—with live progress.
- PDF ↔ Text ConverterExtract plain text from PDFs or build multi-page PDFs from text—entirely in your browser with progress for large documents.
- PDF Merger & SplitterMerge multiple PDFs into one or split a PDF into pages/ranges with progress bars and ZIP download for splits.
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Images ↔ PDF Converter
Document Converters
Combine images into a PDF or extract every PDF page as PNG/JPG images in a ZIP—with live progress.
PDF Merger & Splitter
Document Converters
Merge multiple PDFs into one or split a PDF into pages/ranges with progress bars and ZIP download for splits.
Community
Reviews & Ratings
See what others think about this tool, then leave your own rating to help improve CalculioHub.
4.8
out of 5.0
4 reviews
Daniel R.
Feb 28, 2026
Very usable on mobile. Would love a save/export option later, but the math feels solid.
Priya S.
Feb 3, 2026
The FAQ section answered my questions before I even had to search. Smooth dark mode too.
Marcus L.
Jan 19, 2026
Simple inputs, clear outputs. This replaced three bookmarks I used to juggle.
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Suggestion Box
Share an idea, report a bug, or send general feedback for HTML / Markdown to PDF. Your input helps shape what we build next.