Okular vs Adobe Acrobat Reader

Okular9.2Visit Adobe Acrobat Reader8.5Visit

Higher score Okular #2 in PDF Readers 9.2/10 Free plan Free plan✓ 3 of 4 features Visit KDE

vs

Adobe Acrobat Reader #8 in PDF Readers 8.5/10 Free plan Free plan✓ 3 of 4 features Visit Adobe

• Okular fits best

  Free open-source desktop PDF reading

• Adobe Acrobat Reader fits best

  Mainstream PDF reading and accessibility

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Side by side

Feature	Okular 9.2/10 Visit ↗	Adobe Acrobat Reader 8.5/10 Visit ↗
At a glance
Editor score	9.2	8.5
Ranking	#2 in PDF Readers	#8 in PDF Readers
Best for	Free open-source desktop PDF reading	Mainstream PDF reading and accessibility
Pricing model	Free	Free plan + paid
Starting price	Free plan	—
Free plan	✓	✓
Free trial	—	—
Deployment	Desktop	Desktop, Mobile, Cloud
Platforms	Windows, macOS, Linux	Windows, macOS, iOS, Android, Web
Features Okular 3/4 · Adobe Acrobat Reader 3/4
Annotation tools	✓	✓
Form filling	✓	✓
Offline access	Not checked yet	Not checked yet
Text-to-speech	✓	✓
Specs
OCR support	Not checked yet	Not checked yet
Platform support	Cross-platform	Cross-platform
Our review
Pros	Free and open source across Windows, macOS and Linux Annotations, form filling and digital-signature support Text-to-speech, presentation mode and multi-format viewing	Free reading, printing, search, forms, signatures, and annotations Available across Windows, macOS, iOS, Android, and the web Includes text-to-speech and screen-reader and magnifier support
Cons	No OCR capability is included No integrations are supplied Focused on desktop platforms rather than broader access	Advanced PDF editing is provided through paid Acrobat products PDF conversion is outside the core Reader application OCR is provided through paid Acrobat products rather than Reader
Our verdict	Okular is a free, open-source document viewer from KDE for people who need more than basic PDF reading on a desktop. It opens PDFs alongside PostScript, TIFF, DjVu, images, XPS, EPUB, comic-book formats and other documents. Navigation… Read the review →	Adobe Acrobat Reader is a free PDF application for individuals, students, office workers, and organizations that need to view, print, search, share, annotate, sign, and complete PDF documents. Its free Reader plan supports desktop and… Read the review →

Strengths and trade-offs

• Okular — where it wins

  • Free and open source across Windows, macOS and Linux
  • Annotations, form filling and digital-signature support
  • Text-to-speech, presentation mode and multi-format viewing

  Where it doesn't

  • No OCR capability is included
  • No integrations are supplied
  • Focused on desktop platforms rather than broader access

• Adobe Acrobat Reader — where it wins

  • Free reading, printing, search, forms, signatures, and annotations
  • Available across Windows, macOS, iOS, Android, and the web
  • Includes text-to-speech and screen-reader and magnifier support

  Where it doesn't

  • Advanced PDF editing is provided through paid Acrobat products
  • PDF conversion is outside the core Reader application
  • OCR is provided through paid Acrobat products rather than Reader

• Okular9.2/10 · Free plan

  A capable open-source desktop reader with annotations, forms, signatures and accessibility tools.

  Visit KDEFull verdict →
• Adobe Acrobat Reader8.5/10 · Free plan

  A broadly available free PDF reader with useful accessibility, form, signature, and review tools.

  Visit AdobeFull verdict →