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What is a .gbr file?

A .gbr file is a Gerber Format. This one is a specialist format without an obvious everyday home.

How to open a .gbr file

  • The program that created it is by far the most reliable way to open it.
  • On Windows, use a hex viewer or the free TrID tool to identify what the file really is.
  • On Mac or Linux, running `file yourfile` in the terminal identifies most formats instantly.

The registry records this extension against Gerber Format, so software from that family is the most likely match.

How to convert a .gbr file

  • Identify the file first, then look for an export or Save As option in whatever program can read it.

MIME type

When a .gbr file travels over the web, servers label it with this MIME type:

application/vnd.gerber

What's a MIME type?

The technical record

For archivists, developers and the merely curious: these are the PRONOM registry entries for .gbr.

Format nameVersionMIME typePUID
Gerber Formatapplication/vnd.gerberfmt/664

Got another one?