PDF Master
PDF Master is a PDF editing and manipulation application for macOS. Based on its bundle ID prefix (com.diigo.*), it appears to be developed by Diigo or associated with their toolset. The app allows users to view, annotate, edit and manage PDF files, with features typically including text editing, form filling, and document manipulation. It targets users who need straightforward PDF workflows without the complexity of enterprise tools.
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1 suggestionVery little public information is available about PDF Master — the app does not appear in major Mac software directories or recent tech publications, and the developer's current status and whether a native Apple Silicon build exists remain unclear. If you rely on this app, the most straightforward step is to contact Diigo directly to confirm whether a native Apple Silicon build is available, or whether one is planned before macOS 28 arrives in September 2028. An Intel-only build will stop launching entirely once Apple removes Rosetta 2 on that date. In the meantime, you can check your own copy by opening Activity Monitor, selecting the PDF Master process, and looking at the "Kind" column — if it says "Intel", that confirms you are on an Intel-only build. Consider keeping a watchlist of the developer's website or contacting their support email to stay informed about any compatibility updates.
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