Find Differences in Construction Drawings
A missed change on a construction drawing can mean rework, claims, or worse. PDFverifier compares two revisions of any construction drawing and shows you every difference — fast, accurately, automatically.
Why this matters on a construction project
Construction drawings cycle through many revisions — IFC, IFA, Rev 1, Rev 2, addenda, RFI responses. Every revision potentially affects scope, cost, and program. Project managers and BIM coordinators need a reliable way to identify exactly what changed, every time, without spending hours manually overlaying drawings.
PDFverifier produces a precise visual diff between any two construction drawing PDFs in under a minute, so you can verify changes before issuing to subcontractors, distribute clear revision summaries, and avoid the disputes that come from undetected drawing changes.
Works across all construction disciplines
Architectural
Plans, elevations, sections, details.
Structural
Foundation plans, framing, rebar layouts.
MEP
Mechanical, electrical, and plumbing layouts.
Civil & site
Site plans, grading, drainage, layouts.
Save it for the record
Every comparison can be exported as an annotated PDF showing approved changes with comments — perfect for transmittals, RFI responses, and project documentation. Pro users get 90-day session history for revisiting comparisons during the life of the project.
Catch every drawing change
Free previews — try it on a real revision pair from your project.
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