What is a .AMF file?
AMF (Additive Manufacturing Format) is an XML-based 3D-printing format supporting colour and materials.
- Did you know
- AMF was first published as an ASTM standard (F2915) in 2011 as an STL successor, though 3MF has since overtaken it.
- AMF can describe curved-triangle surface patches, so a smooth object needs far fewer facets than the flat triangles STL is limited to.
- It was standardised by ASTM International’s Committee F42 on additive manufacturing technologies and later carried forward as an ISO/ASTM standard.
- Beyond shape, AMF natively records colour, graded materials, lattices and repeated “constellations” of parts, all of which STL cannot express.
- Despite being technically strong, AMF saw limited uptake because printer makers largely rallied behind the Microsoft-backed 3MF instead.
- What Analyser shows you
- View STL, OBJ, PLY, OFF, STEP, IGES, BREP, 3MF, AMF and glTF/GLB models in an interactive WebGL viewer with orbit, orthographic or perspective projection, a wireframe topology overlay, an orientation cube, triangle count, bounding box, surface area and volume. glTF 2.0 and binary GLB scenes are parsed natively - the node graph is flattened, mesh geometry shown, and the authoring tool, version and mesh/material/animation counts read. STEP/IGES/BREP are tessellated with OpenCASCADE and STEP shows its originating CAD system, version and AP203/214/242 protocol; 3MF and AMF let you inspect each model and assembly on the build plate individually. Wavefront material libraries (MTL) are broken out into each material with its colours, shininess, opacity and the texture files it references.
- Open a .AMF file
- Drag a .AMF file onto the Analyser home page (or tap to pick one). It opens entirely in your browser - nothing is uploaded, there is no account, and it works offline once installed.