Articles

Plain-language guides to STL, 3MF, and browser-based 3D model viewing.

• How to View an STL File Online — Free, No Installation Required

  Step-by-step guide to viewing STL and 3MF files online using STLViewer. Upload, inspect, measure, and share 3D models in your browser — no software to install.

  3 min read · Published 2026-05-20

• STLViewer.online: Free Browser-Based STL & 3MF Viewer — Complete Feature Guide

  Complete guide to STLViewer.online — a free browser-based STL and 3MF viewer with material presets, a measurement tool, QR code sharing, and instant 3D preview with no installation required.

  17 min read · Published 2026-05-13

• What is a 3MF file?

  3MF is the modern replacement for STL — an open standard built on ZIP and XML that preserves units, colors, materials, assemblies, and often slicer settings.

  4 min read · Published 2026-04-17

• What is an STL file?

  A plain-language guide to the STL 3D model format — ASCII vs. binary, triangle facets, common mesh errors, and when STL still makes sense.

  4 min read · Published 2026-04-24