求Windows/Linux平台具备内部链接预览功能的PDF阅读器（类Mac版Skim）

Great question! Skim’s hover preview for internal links is seriously underrated—it makes navigating dense PDFs so much smoother. Here are solid options for Windows and Linux that replicate that functionality:

• Foxit Reader (Free Tier)
  This is one of the most reliable picks. It natively supports hover previews for internal links: just hover your cursor over a link, and a small popup will show a snippet of the target page’s content. You can tweak the preview window size and display duration in the settings (look under Preferences > Links) to match your workflow. It also comes with extra perks like annotation tools and form filling for everyday PDF tasks.
• PDF-XChange Editor (Free Version)
  Another strong contender. Its hover preview for internal links shows either a thumbnail or a content snippet of the linked section, and you get more granular customization options than Foxit—like adjusting the popup’s background color, border style, and even whether it shows page numbers. The free version has all the core features you need for this use case.

• Okular
  If you’re on a KDE-based distro (or even if you’re not—you can install it easily), Okular is a top choice. It has built-in hover previews for internal links: hover over a link, and a small window pops up with the target page’s content. It handles complex PDFs (like those with embedded media or layered content) really well, and you can adjust the preview window size in its settings to fit your needs.
• Master PDF Editor (Free for Non-Commercial Use)
  This cross-platform tool works on both Linux and Windows, and it includes the hover preview feature for internal links. The popup shows a clear snippet of the linked page, and you can customize how long the preview stays visible. It also has advanced features like PDF editing and merging if you need more than just reading.

A quick note: Some of these tools might have the hover preview enabled by default, but if you don’t see it right away, check the Links or Navigation section in the preferences menu to turn it on.

内容的提问来源于stack exchange，提问作者Adam