Catch the diffs. Drop the errors.
Instantly see what changed between your schematics, Gerbers, BOMs, and netlists — all on your machine.
Cyan = old · Magenta = new · Yellow = the catch
Watch how Kontr-Owl spots differences in seconds.
All the critical PCB artifacts, covered.
Compare PDF schematics side‑by‑side and spot every page difference.
See added, removed, and changed components at a glance.
Visual diff for copper, silkscreen, soldermask, and outline.
Compare hole positions, sizes, and plating changes.
Catch connectivity regressions — nets added, removed, or modified.
Export a professional PDF or CSV summary for your design review.
Three simple steps, no cloud, no fuss.
Old and new revisions — PDFs, Gerbers, BOMs, netlists, drill files.
Select the layer, page, or span you want to inspect.
A visual overlay with every change highlighted — ready to export.
Built for hardware engineers who value their time — and their IP.
Your design files never leave your machine. No cloud uploads, no subscriptions.
Works with Altium, KiCad, Eagle, or any tool that exports Gerbers or PDFs.
Cyan and magenta are clearly distinguishable even with red‑green colour vision deficiency.
Export PDF reports or CSV summaries — share with anyone.
Get early access and try Kontr-Owl on your next board revision.
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