Skim

Documents & office

Free open sourceEditorial overview
A CLOSER LOOK

What is Skim?

Skim is a macOS PDF reader and note-taking tool designed around close reading. Highlights, notes, bookmarks and text export make it useful for reviewing papers and other lengthy documents.

PDF highlights

Notes

Bookmarks

Note export

SyncTeX support

Is it a good fit?

Best suited to

Mac users closely reading and annotating PDFs.

Before you choose

macOS only; focused on reading and annotation rather than page-content editing.

Editorial assessment based on the provider’s published information. Our method

Know what you're signing up for.

Skim offers BSD-licensed PDF reader at no license charge. macOS only; focused on reading and annotation rather than page-content editing.

macOS only; focused on reading and annotation rather than page-content editing.

Check current official pricing

The useful parts. The trade-offs.

Why consider it

Reading and note export support research review

SyncTeX integration helps LaTeX workflows

What to keep in mind

macOS only

Not a full PDF content editor

How to use it well

Skim supports a reading workflow in which highlights lead to useful notes. Keep a consistent annotation convention and export findings when moving into a writing project, rather than leaving every insight buried in the marked-up source.

Read with a small, consistent set of highlight colors and write a short note explaining why a passage matters. Export notes when moving findings into a writing workflow. Keep the source PDF and annotation data together, and check compatibility before exchanging marked-up files with another reader.

A few things you might be wondering.

Is Skim free?

Skim offers BSD-licensed PDF reader at no license charge. macOS only; focused on reading and annotation rather than page-content editing.

Can notes be exported as text?

Yes. The official feature list includes exporting notes as text.

Does Skim work with LaTeX tools?

It supports SyncTeX and PDFSync interaction for connected source-and-PDF workflows.

Where can I check the latest prices?

Use the provider link on this page. Billing period, location, team size, promotions, taxes, and optional extras may affect the amount you pay.

How should I compare this tool with alternatives?

Choose tools for the same task, then compare their feature limits, platform support, and total cost for your team. The Compare button helps you keep a shortlist.

Are the user reviews moderated?

Yes. New reviews are submitted for moderation. We show published user reviews separately from the editorial overview and never assign a default user rating.

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