Mark up the drawing where the work happens
Add callouts, arrows, text, stamps, highlights, and comments directly on construction PDFs so every note stays tied to the plan.
Drawing markup software
Construction Drawing Markup Software
ContractorCounter gives contractors a focused markup workspace for reviewing construction drawings, adding context, checking measurements, tracking counts, and exporting clear PDFs.
- PDF annotations
- Calibrated measurements
- Count checks
- Marked-up drawing exports
Saving, exporting, and bill-of-quantities persist once you sign up free
Measure and count with context
Calibrate scale, measure lengths and areas, and place count marks while the review is still visible on the sheet.
Export clean review evidence
Share marked-up drawings with clients, field teams, and estimating workflows without turning review notes into scattered screenshots.
Common questions
Short answers for contractors
What is construction drawing markup software?
It is software for adding annotations, measurements, comments, stamps, and count marks directly to construction drawings, usually PDFs.
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.