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PAdES Studio vs MD File Viewer

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

PAdES Studio compared with MD File Viewer
Detail PAdES StudioMD File Viewer logo MD File Viewer
What it doesDigital PDF signatures for macOS Free online Markdown viewer that renders .md files entirely in your browser
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelFreemium Free
PricingCreate your first 5 signatures free, then unlock unlimited signing with a one-time purchase Not given
Key features
  • Keychain signing with support for CryptoTokenKit smart cards
  • Visible signature with optional image, signer name, and signing time
  • RFC 3161 timestamping and long-term validation (LTV)
  • Signature inspection with status, certificate chains, and DSS material review
  • Multiple signatures as independent document revisions
  • Local document processing without server uploads
  • Support for PAdES-B-B, PAdES-B-T, PAdES-B-LT, and PAdES-B-LTA profiles
  • Drag-and-drop .md file viewing
  • Paste Markdown and render
  • Fetch and render Markdown from a public raw URL
  • GFM tables, task lists and strikethrough
  • Syntax-highlighted code blocks
  • KaTeX math rendering
  • Mermaid diagrams
  • Export as PDF, Word (.docx), HTML or PNG
  • Works offline after first load
  • 100% local processing — no uploads
What makes it different
  • Real digital signatures that preserve original PDF bytes, not just image stamps
  • Incremental PDF updates preserve existing signatures as independently verifiable
  • All document processing stays local without server uploads
  • Works with macOS Keychain and supported smart cards without PKCS#11 limitation
  • Verification always unlimited while signing has free tier option
  • Nothing uploaded to any server, runs entirely in your browser
  • No signup or account required
  • Handles large files without server-side limits
  • Works offline after first load
  • Full Markdown stack with tables, code, math and diagrams
Community votes00
DR (Domain Rating by Ahrefs)37 no change since last check1 no change since last check
Trust Flow (Majestic)72
Citation Flow (Majestic)1616
Referring domains (Majestic)54

4 details filled in for both companies.

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