Use annotation language buyers search for
Some teams call it markup, others call it annotation or redlining. ContractorCounter supports the same practical review work on construction PDFs.
PDF annotation tool
Construction PDF Annotation Tool
Annotate construction PDFs with the information contractors need to move work forward: comments, callouts, scale-aware measurements, counts, and export-ready markups.
- PDF comments
- Callouts and arrows
- Stamps and symbols
- Measurement context
Saving, exporting, and bill-of-quantities persist once you sign up free
Keep comments tied to drawings
Notes make more sense when they stay connected to the exact drawing location, measurement, and count that caused the question.
Prepare clearer handoffs
Export annotated PDFs so review decisions can move into field, estimating, or client conversations with context intact — the core of drawing review for contractors.
Common questions
Short answers for contractors
Is PDF annotation different from markup?
In construction search terms they usually describe the same job: adding notes, symbols, measurements, and review context to a drawing PDF.
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.