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Open PDF Studio is a free, open-source PDF viewing and editing application designed for document annotation and technical workflows. It uses a Rust-based rendering engine to provide responsive document navigation and editing. Users can highlight text, draw shapes, add comments, insert images, and apply permanent redactions. The software includes measurement tools for architectural and engineering drawings, including calibrated distances, areas, and perimeters. It supports DWG and DXF importing and exporting, optical character recognition, and document comparison. Additional capabilities include digital signature validation, form editing, and page management. Available for Windows, macOS, Linux, and Android, Open PDF Studio provides professional document tools without mandatory subscriptions or telemetry.
Features
- Advanced PDF annotation with text markup, drawing tools, stamps, and permanent redaction
- Calibrated distance, area, and perimeter measurements for architectural and engineering drawings
- DWG and DXF importing and exporting with preserved drawing layers and scales
- OCR text recognition for scanned documents with searchable and selectable content
- PDF revision comparison with synchronized viewing and automatic change detection
- Page management, interactive forms, digital signature validation, and local MCP integration
Project Samples
