Drawboard PDF is a well-known annotation and markup program for Windows that comes with drawing, measurement, organization and collaboration tools.
Filling
The app supports pen, highlighter, shape and ink tools, letting users draw freehand or create precise lines and geometric shapes. With smart ink-recognition, users draw straight lines or perfect polygons. It is possible to customize stroke thickness, color, opacity and pressure sensitivity to match one’s writing style.
Furthemore, you can merge, split, reorder, extract or delete pages. A Pro mode enables combining multiple files into a single PDF. On top of that, there is optical character recognition that helps you convert scanned or image-based docs into searchable and editable texts. As for printing projects, you may try doPDF.
Measurement, Calibration and Precision
There are tools to calibrate pages and measure distances, areas, angles or connected polylines accurately. Snapping allows you to align markups to document components, which may be useful when working with technical drawings. Grids, line templates and hatch patterns support building scalable, layout-aware annotations.
Features
- possible to open, view and edit multiple PDFs;
- includes freehand ink, highlighter, shape and smart-conversion instruments;
- easy to merge, split, reorder, extract and delete pages;
- free to download and use;
- compatible with modern Windows versions.
