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Skim is a PDF reader and note-taker for OS X. It is designed to help you read and annotate scientific papers in PDF, but is also great for viewing any PDF file. Skim requires OS X 10.10 or higher.

Features

  • Viewing PDFs
  • Adding and editing notes
  • Highlighting important text, including one-swipe highlight modes
  • Making "snapshots" for easy reference
  • Navigation using table of contents or thumbnails, with visual history
  • View all your notes and highlights
  • Convenient reading in full screen
  • Giving powerful presentations, with built-in transitions
  • Handy preview of internal links
  • Focus using a reading bar
  • Magnification tool
  • Smart cropping tools
  • Extensive AppleScript support
  • Bookmarks
  • Saving passwords in Keychain
  • Export notes as text
  • Automatic download of remote PDFs
  • Support for Apple Remote Control
  • Interaction with LaTeX, SyncTeX, and PDFSync
  • Integration with BibDesk and other third party applications
  • Spotlight support
  • Highly customizable
  • And much more...

Project Samples

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Project Activity

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Categories

Image Viewers, Scientific/Engineering, PDF, PDF Readers, Note-Taking

License

BSD License

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Skim Web Site

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User Ratings

4.7 out of 5 stars
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support 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 4 / 5

User Reviews

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  • vsud Posted 2026-10-09
    4 out of 5 stars
    Very nice software! I use to present Beamer presentations in PDF while still having the option of annotations and next-slide preview. There is room for improvement, but the current version is already very helpful.
  • sudoabuser Posted 2025-05-23
    5 out of 5 stars
    absolutely love this app so much, ive practically gotten every single feature id ever use unlike every single other pdf viewer and you say its all for free!? f***in love open source!
  • drsal Edited 2025-03-08
    5 out of 5 stars
    An excellent no frills app to peruse and markup pdf's. Well done! Edit: Annotations don't persist across apps.
  • touchmii Posted 2024-12-14
    5 out of 5 stars
    excellent pdf viewer!!!
  • aliko Posted 2024-08-22
    5 out of 5 stars
    Good
Read more reviews >

Additional Project Details

Awards

Operating Systems

Mac

Languages

Dutch, English, French, German, Italian, Russian, Spanish

Intended Audience

Education, Science/Research

User Interface

Cocoa (MacOS X)

Programming Language

Objective C

Related Categories

Objective C Image Viewers, Objective C Scientific Engineering, Objective C PDF Software, Objective C PDF Readers, Objective C Note-Taking App

Registered

2007-03-28
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