SumatraPDF vs KDAN PDF

SumatraPDF9.0Visit KDAN PDF8.7Visit

Higher score SumatraPDF #4 in PDF Readers 9.0/10 Free plan Free plan✓ 4 of 4 features Visit SumatraPDF

vs

KDAN PDF #6 in PDF Readers 8.7/10 Free plan · 7-day trial Free planFree trial✓ 1 of 4 features Visit KDAN PDF

• SumatraPDF fits best

  Portable Windows reading with signatures

• KDAN PDF fits best

  Users needing PDF editing and conversion

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Side by side

Feature	SumatraPDF 9.0/10 Visit ↗	KDAN PDF 8.7/10 Visit ↗
At a glance
Editor score	9.0	8.7
Ranking	#4 in PDF Readers	#6 in PDF Readers
Best for	Portable Windows reading with signatures	Users needing PDF editing and conversion
Pricing model	Free	Free plan + paid
Starting price	Free plan	$59.99/yr
Free plan	✓	✓
Free trial	—	7 days
Deployment	Desktop	Desktop, Mobile
Platforms	Windows	Windows, macOS, iOS, Android
Support	Docs, Community	Email, Docs
Built for	Solo, Small business, Mid-market	Small business, Mid-market
Features SumatraPDF 4/4 · KDAN PDF 1/4
Annotation tools	✓	✓
Form filling	✓ (best)	Not checked yet
Offline access	✓ (best)	Not checked yet
Text-to-speech	✓ (best)	Not checked yet
Specs
OCR support	Not checked yet	Not checked yet
Platform support	Desktop	Not checked yet
Our review
Pros	Opens PDFs, ebooks, comics, images, and several document formats Supports annotations, digital signatures, and Windows text-to-speech Portable deployment and command-line PDF operations support local workflows	Combines editing, annotation, forms, OCR, conversion, and page management Runs across Windows, macOS, iOS, and Android AI+ adds redaction, summarization, review, and translation tools
Cons	Windows-only, with no macOS, Linux, web, or mobile versions Cannot fill PDF forms, despite supporting form-field highlighting Scanned pages require OCR elsewhere	Advanced editing and conversion require a paid plan Lifetime licensing is limited to desktop use per device Cloud integrations listed are iCloud and Dropbox
Our verdict	SumatraPDF is a free, open-source desktop reader for Windows. It is aimed at people who want to read PDFs and a broad set of other local formats, including EPUB, MOBI, CBZ, DjVu, XPS, CHM, and image files. Text search, document navigation,… Read the review →	KDAN PDF is a PDF reader and editor for individuals, office workers, educators, legal professionals, and small businesses. Its free tier covers viewing PDFs, annotations, handwriting, signatures, and form filling. Across Windows, macOS,… Read the review →

Strengths and trade-offs

• SumatraPDF — where it wins

  • Opens PDFs, ebooks, comics, images, and several document formats
  • Supports annotations, digital signatures, and Windows text-to-speech
  • Portable deployment and command-line PDF operations support local workflows

  Where it doesn't

  • Windows-only, with no macOS, Linux, web, or mobile versions
  • Cannot fill PDF forms, despite supporting form-field highlighting
  • Scanned pages require OCR elsewhere

• KDAN PDF — where it wins

  • Combines editing, annotation, forms, OCR, conversion, and page management
  • Runs across Windows, macOS, iOS, and Android
  • AI+ adds redaction, summarization, review, and translation tools

  Where it doesn't

  • Advanced editing and conversion require a paid plan
  • Lifetime licensing is limited to desktop use per device
  • Cloud integrations listed are iCloud and Dropbox

• SumatraPDF9.0/10 · Free plan

  A portable Windows reader with broad format support, annotations, signatures, and command-line tools.

  Visit SumatraPDFFull verdict →
• KDAN PDF8.7/10 · Free plan · 7-day trial

  A flexible PDF editor with free basics, paid productivity tools, and AI workflows.

  Visit KDAN PDFFull verdict →