Precision. Performance. Possibilities.
High-quality 3D printing and rapid prototyping services for demanding applications across the North Sea and beyond.
Powerful tools to view, analyse, repair, convert and prepare your 3D files.
Explore All Tools ›
STL Viewer
View & Inspect STL Files
STL Repair
Analyse & Repair Meshes
STEP Viewer
View & Measure CAD
G-Code Viewer
Analyse Printability
Lithophane Maker
Create 3D Lithophanes
STEP to STL
Convert STEP / STP
IGES to STL
Convert IGES / IGS
OBJ to STL
Convert OBJ Models
3MF to STL
Convert 3MF Models
PLY to STL
Convert PLY Meshes
GLB to STL
Convert GLB / GLTF
SKP Viewer
View & Measure CAD
SKP to STL
View & Measure CAD
Inspect, analyse, convert and prepare 3D files directly in your browser with NS3D's free online tools. No specialist software installation is required, making it quick and convenient to check, measure and convert your files before 3D printing, manufacturing or sharing them with others.
View STL files online directly in your browser without installing specialist 3D software. Rotate, zoom, measure and inspect your 3D model from every angle to understand its geometry before printing or manufacture.
The NS3D STL Viewer provides a quick and convenient way to inspect STL models and verify that you are working with the correct file before moving to the next stage of your workflow.
Open STL Viewer ›
Detect and repair common problems in STL files before sending them to a slicer or 3D printer. Analyse your mesh for issues such as holes, non-manifold geometry, flipped normals and other defects that can cause problems during slicing.
Visual feedback and before-and-after statistics help you understand what has been identified and repaired, providing greater confidence that your STL file is ready for the next stage of the 3D printing process.
Repair an STL File ›
Open and inspect STEP files online without launching a full CAD package. Explore solid CAD models interactively in your browser, measure between model vertices and review engineering geometry and individual components.
The NS3D STEP Viewer also supports persistent dimensions, diameter measurement, wireframe viewing and exploded assemblies for more detailed CAD inspection.
Open STEP Viewer ›
Visualise G-code toolpaths and analyse a sliced model before committing it to a 3D print. Inspect layers, extrusion paths, travel movements, speeds, retractions and other printing information generated by your slicing software.
The integrated printability analysis provides an additional opportunity to identify potential concerns before using material and machine time.
Analyse G-Code ›
Turn a photograph or image into a 3D-printable lithophane directly in your browser. Adjust dimensions and lithophane settings while previewing how variations in material thickness reproduce the light and dark areas of the original image.
Once you are happy with the result, generate a personalised 3D model ready for slicing and printing.
Create a Lithophane ›
Convert STEP and STP engineering CAD files into STL mesh files directly in your browser. Preview the tessellated geometry before export and inspect model dimensions, components and triangle information.
Useful when preparing CAD models for 3D printing, visualisation or workflows that require STL rather than native STEP geometry.
Convert STEP to STL ›
Convert IGES and IGS CAD files into STL geometry using the NS3D browser-based converter. Inspect the converted model before downloading the resulting STL file.
This provides a convenient route from older engineering interchange formats into the triangular mesh format commonly used by 3D printing and additive manufacturing software.
Convert IGES to STL ›
Convert OBJ 3D models into STL files directly in your browser. Preview the model, inspect its dimensions and geometry, take measurements and check the mesh before exporting.
OBJ files are widely used for 3D modelling, scanning and visualisation, while STL remains one of the most widely supported formats for 3D printing.
Convert OBJ to STL ›
Open a 3MF model in your browser and convert its geometry into an STL file. Inspect the model before conversion with interactive viewing, dimensions and mesh information.
The converter is useful where a printer, slicer or other manufacturing workflow requires STL but your source model has been supplied in the newer 3MF format.
Convert 3MF to STL ›
Convert polygon-based PLY models into STL files while inspecting the source geometry directly in your browser. This can be particularly useful for models originating from scanning, photogrammetry and 3D capture workflows.
Preview dimensions, inspect the mesh and take measurements before generating an STL suitable for downstream 3D printing or mesh processing.
Convert PLY to STL ›
Convert GLB and GLTF 3D models into STL geometry using a browser-based workflow. Rotate and inspect the source model before producing an STL for manufacturing or further mesh processing.
GLB and GLTF are widely used for web-based 3D content, visualisation and digital assets, while STL provides a simple geometry format supported by virtually all 3D printing software.
Convert GLB / GLTF to STL ›
Open and inspect SketchUp SKP files directly in your browser without launching SketchUp. Rotate, pan and zoom around the model while reviewing its geometry, dimensions, components, materials and overall size.
The NS3D SKP Viewer also includes vertex-snapped measurement tools, persistent dimensions, diameter measurement, wireframe viewing and a familiar SketchUp-style display mode for quick model inspection.
Open SKP Viewer ›
Convert SketchUp SKP models into STL files directly in your browser. Preview the model before conversion, inspect its dimensions and geometry, and take vertex-snapped measurements before generating the STL.
This provides a convenient route from SketchUp models into the mesh format widely used by 3D printers and slicing software, while retaining the ability to inspect the source model before export.
Convert SKP to STL ›Professional additive manufacturing, accessible digital tools and engineering-led support—from your initial 3D file through to the finished printed component.
FDM 3D Printing
Fused Deposition Modelling builds parts layer by layer using thermoplastic filament. It is a versatile and cost-effective process for functional prototypes, engineering components, jigs, fixtures and low-volume production.
SLA 3D Printing
Stereolithography uses a precision laser to cure liquid resin, producing highly accurate components with fine detail and smooth surfaces for prototypes, presentation models and specialist applications.
Browser-Based File Tools
View, inspect, repair, convert and analyse 3D files directly in your browser. Our tools are free to use, with no software installation, account or login required.
3D File-to-Print Consultancy
Engineering-led guidance to turn your digital model into a successful printed component, covering file preparation, material selection, orientation, tolerances, part strength and design optimisation.
Technical Expertise
Years of hands-on experience across a wide range of industries.
Quality Assured
Industry-leading equipment and strict quality control processes.
Customer Focused
Solutions tailored to your application rather than a generic process.
Reliable & Local
UK-based support with dependable service and clear communication.
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