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September 26, 2026
.STP
STEP - Standard for the Exchange of Product Data (ISO 10303), .stp spelling
3D Image Files
updated Sep 11, 2026

An .stp file contains a 3D object project saved in STEP (Standard for the Exchange of Product Data) format. .stp and .step are the same format - .stp is simply the older three-letter (DOS/Windows 8.3) spelling of a STEP file. Both share the MIME type…

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