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, and any pictures a 3MF package carries - its own thumbnail, the build-plate renders slicers such as Bambu Studio and OrcaSlicer write, and texture maps - are extracted and shown with it. 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.