PDF annotation
Open, render, annotate, and save PDFs with standard PDF annotations
PDF markup and takeoff for Mac
OpenBeam is a desktop PDF markup, takeoff, comparison, and conversion tool for engineers and technical reviewers who need practical drawing workflows on macOS.
No payment is required to start the 12-week trial. Newport Resonance records trial signup and download events to understand user traction and support needs.

Actual OpenBeam early-access interface showing drawing markup, length measurement, and takeoff capture on a construction PDF. The example shows PDF points before scale calibration.
OpenBeam focuses on the PDF workflows engineers actually repeat: annotate, measure, compare, export, and hand over evidence.
Open, render, annotate, and save PDFs with standard PDF annotations
Draw rectangles, ellipses, lines, arrows, revision clouds, polygons, callouts, highlights, stamps, and text boxes
Measure length, area, perimeter, diameter, angle, volume, and counts with calibration
Follow the PDF takeoff workflow for MacCompare drawing revisions with change clouds and overlay views
Read the PDF revision comparison guide for MacExport markups to Excel or CSV and convert PDFs to images, Word, Markdown, and flattened PDFs
Start with a representative drawing, check its scale and follow the result through to a saved PDF and export. These guides help you plan the review and choose the tools your team needs.
Use the download portal to start a 12-week trial and get the latest available OpenBeam early-access release.
OpenBeam is a Newport Resonance product. It is not affiliated with, endorsed by, or sponsored by Bluebeam, Inc.