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KiCad Board Inspector

Open a .kicad_pcb file and see its layer stack, board size, footprints, nets, and track/via minimums a fab house checks — no KiCad install needed.

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A KiCad .kicad_pcb board file

Accepted: .kicad_pcb

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What this reads

A .kicad_pcb file is KiCad's board format: a plain-text, Lisp-like list of (token value…) forms describing every footprint, track, via, zone and layer on the board. This tool parses that structure directly in your browser — the same file KiCad itself would open — and pulls out the numbers that matter before you hand the board off to a fab house or a collaborator.

What you get

  • Layer stack, in board order, with copper layers marked.
  • Board size, taken from the Edge.Cuts outline.
  • Every footprint, with its reference designator, value, library name and pad count — searchable.
  • The net list — every named net on the board, searchable.
  • Track, arc, via and zone counts.
  • The minimums that matter for fabrication: the narrowest track width, smallest via drill, and smallest via diameter actually used anywhere on the board. Typical fab-house capability tiers are shown alongside these as general orientation — they are not a pass/fail verdict for your specific fab, whose real limits also depend on copper weight, layer count and clearance.

Older files, honestly

KiCad's board format has changed across major versions: footprints were called module before KiCad 7, and reference/value used to live in fp_text entries rather than in structured property fields. Both older forms are read the same as the current ones. A board saved with no root-level net table — common on boards exported from older or converted tools — still gets a net count, derived from the distinct net names actually referenced by pads.

Privacy

The file never leaves your browser. Nothing is uploaded, and nothing is stored once you leave the page.