Also available: Windows ARM
The Zotero Connector for Safari is bundled with Zotero. You can enable it from the Extensions pane in the Safari settings.
If you're unable to install an extension in your browser, you can save web pages or identifiers to your library from this page or with the magic wand button from your web library.
Download Zotero Connector
Zotero Connectors are for desktop only. On mobile, you can easily save items and PDFs from the web to Zotero via the Share button in browsers and other apps.