Kontr-Owl

Catch the diffs. Drop the errors.

Early Access

Compare old vs new PCB revisions. Instantly.

Visual diffs for schematics, Gerbers, BOMs, drill files, and netlists — all on your machine.

100% local · No cloud upload
Get Early Access Watch demo
● Old revision
Drop files here
● New revision
Drop files here
3 layers compared · 12 changes found7 changed regions

See it in action

A 60-second tour of Kontr-Owl.

The manual way is error‑prone

  • Overlaying PDFs by eye — hours per board
  • Missed via moves that cause expensive respins
  • Spreadsheet BOM comparisons, manual netlist checks
  • No audit trail of what changed

Kontr-Owl is the fix

  • Visual schematic diff, page by page
  • Gerber overlay with cyan/magenta highlighting
  • BOM comparison — added, removed, changed
  • Netlist and drill file comparisons

5 diffs, 1 report

Every critical PCB artifact, covered.

📄

Schematics

PDF diff, page by page

📋

BOM

Added, removed, changed parts

🖨️

Gerber

Copper, silkscreen, soldermask

🧵

Drill

Hole positions, sizes, plating

📡

Netlist

Connectivity regressions

📊

Report

PDF or CSV summary export

How it works

Three steps, no cloud, no fuss.

Drop files

Old and new revisions

Select target

Layer, page, or span

Get diff

Visual overlay + export

Why Kontr-Owl

🔒

Local

Files never leave your machine

🔄

Vendor‑agnostic

Altium, OrCAD, KiCad, Eagle, any

👁️

Accessible

Cyan/magenta for CVD users

📦

No lock‑in

Export PDF or CSV reports

Ready to stop missing changes?

Try Kontr-Owl on your next board revision.

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