.stepTypical support level 3

View STEP and STP CAD Files Online

Inspect and rotate STEP or STP parts and assemblies, with supported component names and face colors. Free, with no uploads, signup or software installation.

Choose a .step file

Your file stays on this device

Choose a file to view it in your browser. No signup or software installation needed. Your file stays on your device and is never uploaded.

What Anyfile can show

Tessellated solid and surface geometry with face boundaries
Assembly hierarchy, component names and face colors when present in the imported model
Standard views and component visibility; STEP units are converted to millimeters

Limits and conditions

128 MiB input; WebGL 2 and WebAssembly required
The preview does not expose PMI, feature history, exact measurements or manufacturing validation
Surface appearance is an approximation of the CAD geometry, not an editable parametric model

IMPLEMENTATION

Viewers responsible for this format

STEP exchanges product geometry between CAD systems. The supported text representation begins with ISO-10303-21; .stp is another extension for the same format. Anyfile converts imported shapes into display triangles so you can inspect a supplier's part or assembly without the original CAD application.

CAD exchange viewer

CAD exchange viewer: explore supported file formats, viewing limits and open-source credits. Your files are never uploaded.

See implementation and open-source credits

Common question

Is STP different from STEP?

The .stp and .step extensions refer to the same exchange format. You can open either here without renaming or converting the file.

Why does a STEP assembly have no feature tree?

An exchange file can describe parts and their geometry without the sketches and operations of the source design. The viewer displays imported components; it does not reconstruct modeling history.