Annotate plan sets clearly
Use text, arrows, callouts, shapes, stamps, and comments to make scope questions and review notes visible on the sheet.
PDF markup for construction
PDF Markup Software for Construction
Construction drawings arrive as PDFs. ContractorCounter keeps markup, measurement, counts, and exports in one browser workspace so review work stays tied to the document.
- Browser PDF markup
- Scale calibration
- Construction comments
- PDF export
Saving, exporting, and bill-of-quantities persist once you sign up free
Measure after calibration
Set scale once, then measure and count directly on the PDF so notes carry useful quantities with them — or take it further with a full construction takeoff.
Share the marked-up PDF
Export clear marked-up drawings for coordination, internal review, client communication, or downstream estimating.
Common questions
Short answers for contractors
Can contractors mark up PDFs online?
Yes. ContractorCounter runs in the browser and supports common construction PDF markup workflows without requiring a desktop PDF editor.
Is ContractorCounter only for estimating?
ContractorCounter is focused on drawing markup, PDF annotation, calibrated measurement, counts, stamps, comments, and clean exports. Estimating can happen after the markup work is clear.
Does it work in the browser?
Yes — ContractorCounter is fully browser-based, which means it runs on Windows, macOS, and iPad without an installer, a Windows-only desktop dependency, or a virtual-machine workaround for Mac users. Upload PDF or image drawings, calibrate the scale once per sheet, and the full markup, measurement, and counting workflow runs in the tab — at the desk or on site. Because the workspace lives in the browser, the same drawing opens identically on every machine, so the office and the field are always looking at the same markups without anyone syncing files or matching software versions. If your team has been locked out of desktop-first tools on Mac or iPad, this is the structural difference to test first.