Catch scope changes before they cost you.
When a GC issues Addendum 3 the night before bid, Drawing Compare overlays the new drawing set on the old one and shows you every line that moved. Reestimate only what changed, not the whole package.
Every change, called out in your colors.
Open the old and new revision of a raster drawing, line them up once, and Drawing Compare paints additions in one color and deletions in another. Show the markup on the original drawing or on the revision, whichever you hand around the office.
- Reads PDF, TIFF, and PNG raster drawings
- Align the two drawings, then color codes every difference
- User defined colors for additions and removals
- View the diff on either the original or the revised drawing
Save the markup. Take it off in BidScreen XL or SiteWorx/OS.
Save the color coded result as a new drawing file. Open that same file in BidScreen XL or SiteWorx/OS and take off only the changes, no need to redo the whole sheet.
- Saves the diff as a new raster drawing
- Opens directly in BidScreen XL for Excel based takeoff
- Opens directly in SiteWorx/OS for cut and fill rework
- Re bid only what moved between revisions
- BidScreen XLExcel takeoff
- SiteWorx/OSCut + fill
One yearly subscription.
Drawing Compare is sold as an annual subscription, the tool pays for itself the first time a late addendum lands.
Full feature set for the subscription term, license and updates included.
- PDF, TIFF, and PNG raster revision diffs
- User defined add and remove colors
- Show the markup on the original or revised drawing
- Save the diff as a new file for BidScreen XL or SiteWorx/OS
Need a PDF tool that doesn't choke on a real plan set?
Nanodoc.app is a fast, focused viewer for construction drawings — text, shape, and freehand markup, no sign-up wall, browser-based.
See every change before you bid.
14 day trial with the full Drawing Compare workflow. Then subscribe for $150 a year.