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September 17, 2026
.SKP
SketchUp Document
3D Image Files
updated Jun 22, 2026

A .skp file contains a 3D model or an element of such a model. This format is native to SketchUp software. .skp is a proprietary binary format whose specification has never been publicly released, though SketchUp SDK libraries and the C API are available to…

SIGNATUREFFFEFF0E53006B00Often contains UTF-16 "SketchUp" near the start (e.g. ...53 00 6B 00 = "S k"); header varies by version
OPENS ONMac OSmacOSWebWindows
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