Open PDF Studio

Free, open-source PDF viewer and editor with annotation, markup, and redaction tools.

Desktopfreeglobal

Open PDF Studio is a free, open-source PDF viewer and editor for Windows, macOS, Linux, and Android. It provides annotation, markup, measurement, and redaction tools in a native desktop app, without subscriptions or telemetry. It suits anyone who needs to mark up or edit PDFs regularly without paying for commercial software.

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