Download the appropriate file by clicking one of the links below, then run the downloaded
file to install that package.
STL Viewer Setup — 14.1 MB
Please contact support@ideamk.com if
you experience difficulties downloading or installing the product.
|
||
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Beside STL Viewer, you may be also interested in our other free
3D file viewers, STP Viewer
and IGES Viewer.
by Solveering LLC
An advanced tool for viewing, measuring and converting 3D files in multiple formats
Operating system: Windows
Publisher:
Solveering LLC
Release : STL Viewer 14
Antivirus check: passed
Report a Problem
The STL Viewer software is a powerful tool for working with STL files. It’s not limited to just STL files, but also supports over twenty popular 3D formats such as STP/STEP, IGS/IGES, SAT, OBJ, and allows their conversion into other formats such as DWG, OBJ, JPG, amongst others.
A notable feature of this software is the ability to measure 3D models. The Structure panel displays the content of the file and the properties of the measured object: its overall dimensions, volume, and center of mass. This panel allows users to control the visibility of different parts of the 3D models and to save distinct parts as DWG or DXF formats.
Features:
- Precise 3D model measurement: allowing detailed information gathering such as surface area, the height between two parallel surfaces, the distance between two points, the length of an edge, and the radius of a circle or arc.
- 3D section tool: enabling the creation of one or more fully customizable section planes, which can cut through a 3D model allowing users to peer inside and measure its hidden elements.
- Working with 2D CAD formats: in addition to 3D files, STL Viewer also supports working with 2D CAD formats such as DWG, DXF, HPGL, SVG, CGM, amongst others.
The user-friendly measurement tools allow users to gather more detailed information. The measurement results are displayed in a special panel and are also added above the drawing. The dimension text can be moved, hidden or deleted. The drawing, complete with all measurements, can be printed or saved as a BMP file.
STL Viewer simplifies and optimizes 3D modeling projects with its advanced features and varied format compatibility.
In essence, STL Viewer is an essential tool for simplifying and optimizing work with 3D files. Its advanced features and compatibility with a range of formats make it an ideal companion for any 3D modeling project.
Operating system: Windows 7 and above.
At least 2 GB of RAM.
Minimum 500 MB free disk space.
OpenGL 1.2 or later supported Graphics Card.
Supports over twenty popular 3D and 2D formats.
Offers precise 3D model measurement tools.
Enables customizable section planes creation.
Lacks advanced editing features for STL files.
The user interface may be intimidating for beginners.
Occasional crashes reported during file conversion.
MinMax G-code is a software package used to generate optimal G-code for CNC machining operations.
A modern designing software choice, aimed at providing the utmost complex tools to create with
A simple electronic utility to find out resistor and capacitor values
Relief Valve Sizing Calculator is a software program designed to help users quickly and accurately size relief valves for their application.
An AutoCAD-based manufacturing program that centers around mechanical design with some extra libraries
How to view STL files for 3D printing and additive manufacturing? As a standard format, STL are generated by CAD software to describe the surface geometry of 3D models. Given such technical applications and requirements, STL files cannot be directly viewed. Instead, they need a tool called an STL viewer. Desktop software, online tools, and mobile apps are common variations. Typically, it features model navigation, measurement analysis, and print preparation.
With so many options and their features, you may find it hard to locate the proper tool. Don’t worry, this post has collected 10 of the best STL viewers to help you. With Windows, Mac, Linux, and mobile tools included, whether you’re looking for a fast or a free STL file viewer, you’re sure to find the right one. Now, let’s dive in and explore together!
5 Best STL Viewers for Windows/Mac/Linux (Software Version)
The desktop software versions of STL viewers are the most favorable, in fact. Not only are they more stable and offer larger viewing areas, but many also feature STL editing compared to online and mobile tools. Here are five recommendations in this part. Scroll down and have a look.
ZW3D
Supported OS: Windows
Compatible Formats: STL, STEP, IGES, 3D PDF, etc.
ZW3D is the premier choice among STL viewers. It fully supports and can visualize STL files. Thus, you can rotate, zoom, and pan to view model’s small triangular facets from different angles. It can also measure and calculate the length, width, area, and other properties of the model. In addition, advanced features such as sectioning, slicing, and exporting STL files are also accessible.
Notably, ZW3D is also a fast STL viewer, thanks to its built-in CPU and GPU acceleration. So no matter how large or complex the STL file you are viewing, it can respond quickly without lag. However, what sets ZW3D apart is that it is beyond an STL viewer. It can also be an STL editor, design software, engineering tool, and manufacturing assistant. Currently, it offers a 30-day free trial, might as well try it now.
ZW3D 2025, the latest release of ZW3D, is now available. If you’re looking for STL viewer with the best viewing experience, just download it and have a try for 30 days for free.
Free STL Viewer
Supported OS: Windows
Compatible Formats: STL
Free STL Viewer is desktop software dedicated to viewing STL files. True to its name, it is a freeware STL viewer. It provides four different views for 3D models in STL format and allows for angle adjustments by zooming, panning, and changing the projection. All these operations can be easily performed using the Ctrl key and mouse.
One of the most notable features of Free STL Viewer is its ability to add shadows to the surfaces of 3D objects and change the shadow color. This enables you to highlight the focal points and visualize how each part might appear in reality. However, this feature is somewhat rough. The added shadows and colors have visible pixels. If you don’t mind this drawback and only use it as an occasional tool, Free STL Viewer can still be a viable option.
3D-Tool
Supported OS: Windows
Compatible Formats: STL, STEP, PLY, OBJ, 3DS etc.
If you need a 3D viewer that goes beyond STL, you might want to give 3D-Tool a try. Besides STL and STEP, this STL viewer for Windows also supports 3D formats from specific software like CATIA and NX. This means you can directly view 3D models and also convert them for different CAD software integration.
Meanwhile, 3D-Tool excels in analysis. It comes with various measurement tools for distance, angle, radius, and wall thickness. It can also be used for model comparison and to calculate draft angles, mold cavities, bottom cuts, and projected areas to estimate production costs.
In addition, 3D-Tool supports file collaboration to improve efficiency. With just a few clicks, it can create and save detailed 3D views of models as presentations and documents for meetings and printing. What’s more, 2D CAD designs can also be visualized in 3D-Tool. Overall, 3D-Tool is a versatile STL file viewer. At a base price of 50 euros, it now offers three subscriptions: Basic, Advanced, and Premium, allowing you to purchase according to your needs.
FreeCAD
Supported OS: Windows, Mac, and Linux
Compatible Formats: STL, STEP, IGES, OBJ, etc.
FreeCAD is a full-fledged CAD software that can also be a competent STL file viewer. It allows you to import and open 3D models saved in STL format. Similar to other STL viewers for Mac, Linux, and Windows, FreeCAD provides basic operation features. You can rotate, zoom, and pan STL models within the FreeCAD workspace to examine them from different angles.
Not only that, FreeCAD offers handy measurement tools to determine distances, angles, and other dimensions of the model. Going beyond viewing STL files, it can also convert STL files to different formats for use or editing in other software. Moreover, FreeCAD doubles as an STL editor thanks to its related capabilities in computer-aided design. Overall, FreeCAD is a two-in-one STL tool worth considering.
OpenSCAD
Supported OS: Windows, Mac, and Linux
Compatible Formats: STL, OFF, AMF, 3MF, etc.
For another STL viewer for Linux, Mac, and Windows, you can consider OpenSCAD. Compatible with the STL format, it can import STL files for viewing and editing, and can also be used to create 3D models and export them as STL files.
However, the operation process might be somewhat challenging as you need to know a programming language and be able to find the appropriate STL viewing APIs to integrate with. Luckily, once these hurdles are overcome, it can fully serve as an open-source and free STL viewer. And its parametric design capability makes STL modifications more convenient.
Note: OpenSCAD cannot directly open STL files. Instead, you have to create a new task and drag the STL file into the workspace each time you want to view it. This can be quite inconvenient.
3 Top STL Viewers Online
If you prefer not to download software to view STL files, try web-based STL viewers. These online tools allow for quick visualization, online collaboration, and even support for 3D printing. Here are three of the best online STL viewers to consider.
Online 3D Viewer
Supported OS: Web-based
Compatible Formats: STL, STEP, OBJ, 3DM, 3DS, etc.
Online 3D Viewer is an open-source and free STL viewer. With the help of a mouse, it allows for free rotation, zooming, and panning of models for multi-angle viewing. If you prefer a specific up vector, it can achieve that as well. It’s worth mentioning that Online 3D Viewer can load local STL files or retrieve model data via URL. Especially when you view STL online via URL, it allows you to set up a shared link to enhance collaboration with teams and stakeholders.
Furthermore, Online 3D Viewer not only supports 3D printing but also provides two camera options for 3D model visualization: perspective camera and orthographic camera. The former creates more natural and realistic views, allowing you to accurately check the model’s scale and proportions. The latter, on the other hand, is ideal for distortion-free, parallel views, making it suitable for precise measurements and analysis.
Tinkercad
Supported OS: Web-based
Compatible Formats: STL, OBJ, GLTF, etc.
Tinkercad, created by Autodesk, is a web-based CAD tool suitable for teaching and beginners, but its all-around capabilities also make it ideal for use as an STL file viewer. Similar to Online 3D Viewer, Tinkercad opens STL files from your device or through a URL. Its simple interface allows you to see six different views of the solid model, and you can flatten one side for viewing.
Meanwhile, this free STL viewer lets you customize the model’s color for better visualization and make the entire model transparent to examine its internal structure. Beyond that, with a ruler tool, Tinkercad is capable of automatically identifying and generating dimensions such as length, width, and height. Better yet, backed by Autodesk, it supports a wide range of 3D printing options, including MakerBot, Polar Cloud, and ROBO.
ViewSTL
Supported OS: Web-based
Compatible Formats: STL, OBJ, 3MF, VF, VSJ, etc.
ViewSTL is a web-based tool specifically designed for viewing STL files online. It features a user-friendly interface and a simple drag-and-drop movement can help you open STL files from your computer. And only mouse gestures can make you accessible to actions like zooming, panning, and isometric views in ViewSTL. Additionally, if you stretch the model to change its length or width, ViewSTL will sync and display the changes in dimension data.
ViewSTL also allows for the modification of model surface colors and turns the model transparent for internal inspection. The entire process can be captured in high resolution with the built-in screenshot tool, making it convenient for presentations or sharing. What’s more, ViewSTL is well-suited for viewing multiple STL files simultaneously. Because it enables you to selectively view individual models within a group.
2 STL File Viewers for Android/iOS
STL viewers are no longer confined to desktops and web browsers. Mobile phones now also have STL viewers, and their features can rival desktop and online counterparts. Check out the following two STL file viewers for Android and iOS and make your selection.
Fast STL Viewer
Supported OS: Android
Compatible Formats: STL
Fast STL Viewer is an STL file viewer for Android. It allows you to quickly import and open STL files from your Android device. And different viewing modes are offered, including shaded views, wireframe views, and combinations of both, to help you visualize models effectively. Fast STL Viewer also supports interactive viewing. This way, STL files can be detailed inspected through rotation, zoom, and pan.
In addition to being fast and easily accessible, Fast STL Viewer excels in multi-file handling and collaboration. It can view and compare multiple STL files loaded in the same session. Moreover, STL files can be shared with others for online collaboration via links, images, and other means. In addition, if your budget allows, you can upgrade in app to calculate the volume of selected parts of STL models and perform editing.
STL Simple Viewer
Supported OS: iOS
Compatible Formats: STL
Similar to Fast STL Viewer, STL Simple Viewer is an STL file viewer for iOS. It is fully and exclusively compatible with the STL format, allowing you to view 3D model details through pan, zoom, and rotate operations.
As a mobile app, it can also adjust the view size with the rotation of the iPhone. Shaded and wireframe views are available, and the app also provides features for dimensions and volume calculation as well as file sharing. However, what sets STL Simple Viewer apart is its ability to customize the colors used to display the model (faces, wireframe, vertices) and the background. Contrasts and highlights can better view STL files.
FAQs About STL Viewer
How to Choose the Best STL Viewer?
It may be time-consuming when you choose the best STL viewer. To help you, here are some key factors to consider:
- Ease of use: A simple and user-friendly interface is essential, especially for beginners. It allows for quick navigation and grasp of the STL viewer;
- Platform compatibility: Ensure that the STL file viewer you choose is compatible with your commonly used devices. It’s preferable to opt for desktop software, as they tend to be more stable and run faster.
- Extensive features: Smooth rotation and movement for viewing STL models from various angles are a must. Integration with 3D printers, support for cloud storage, and team collaboration features would be even better;
- Stable Performance: It’s preferable to opt for desktop software, as it tends to be more stable and run faster. Handy web-based and mobile tools can serve as alternatives;
- Subscription services: Free STL viewers may seem attractive. But subscription-based STL file viewers ensure regular updates for performance and features.
What Is an STL File?
STL (Standard Tessellation Language) file is a common 3D file format used to represent the surface geometry of 3D models. It can be further subdivided into ASCII (text) format or binary format. Among these, Binary STL files generally boast smaller file sizes, making them more suitable for handling large models.
While STL files lack information about color, texture, and other attributes beyond geometric shapes, they can create digital blueprints out of triangles that 3D printers can understand. So given their ease of use and generation, STL files are widely used in computer-aided design and 3D printing.
Conclusion
To sum up, STL viewers have three variants available: desktop software, online tools, and mobile apps. The best STL viewer selection should be based on your needs and level of expertise when it comes to how to view STL files. However, you’d better prioritize ZW3D and other desktop options because they ensure stability and efficiency. Even better, such STL file viewers integrate with other CAD software for seamless collaboration. As for web-based and mobile tools, they can serve as backups for emergencies.
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Появилась возможность быстрого просмотра STL файлов как ‘thumbnail’ в проводнике Windows при выборе вида представления файлов как ‘значки’
Установка проста — запуск InstallStlThumbnail.msi отсюда —
https://github.com/cabbagecreek/STL-thumbnail/releases
В установке можно выбрать и установку простого просмотровщика STL- отдельной программы Marlin3DprinterStlViewer.exe
P.S. Если кто еще не знает, конечно…
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STL files are the most common file format for 3D printers. When working with 3D printers, it’s important to view your STL file and make sure it is correct before printing it. Free STL viewers let you examine a model without using processor-heavy CAD programs. Review your work, or someone else’s work, and make sure it’s perfectly edited and scaled.
We evaluated free and open-source STL viewers and rated these viewers according to ease of use and functionality. Here are our picks for the 13 best free STL viewers.
If your STL files need editing or repairing, you’ll need an STL editor. Some of these programs offer STL viewing and editing features, while others allow only viewing.
Best for Ease of Use: STLView
What We Like
-
The device’s G-sensor views a model from different perspectives.
-
Optimized for large models and fast graphics.
-
Load multiple models at the same time.
What We Don’t Like
-
No Mac or iOS version available.
-
No edit or repair functions.
STLView, from ModuleWorks, is a free, basic STL viewer available for multiple platforms. It supports both ASCII and binary STL formats and loads more than one model at once. It works well with large models and is optimized for fast graphics. Use STLView to display your model from different perspectives, zoom in and out, and change colors. This is a free tool that’s handy and easy to use.
Download For:
Android
Best for Communication: MiniMagics
What We Like
-
Make text annotations to communicate with others.
-
A friendly user interface.
-
Create a printout of all parts of a project.
What We Don’t Like
-
No Mac, Linux, Android, or iOS support.
MiniMagics, from Materialise, is a free STL viewer that works with Windows 10, 8, and 7. Use this tool to view STL files, perform measurements, and communicate with others on a project team, such as a manager or client. You can also view parts and rotate, pan or zoom, add text annotations, and verify printability.
Download For:
Windows
Best Multiple-Function Tool: Meshmixer
What We Like
-
Edit and repair STL files.
-
Useful 3D design tools.
-
Simple, friendly user interface.
-
Support Generator tool helps with 3D printing.
What We Don’t Like
-
You’ll need a powerful system to support all its features.
Meshmixer is more than an STL viewer. You can also use it to edit and repair STL files as well as create 3D designs. With a vast range of 3D modeling functions, Meshmixer is a powerful tool, focusing on 3D printing. It’s a great choice if you need to clean up a 3D scan, design a new object, automatically repair STL files, and more.
Download For:
Windows
Best Basic Viewer: SolidView/Lite
What We Like
-
View and save images in a variety of formats.
-
Share files with others to view.
What We Don’t Like
-
Available only for Windows.
-
Must upgrade to paid versions for additional functionality.
If you’re looking for a simple, basic STL viewer, SolidView/Lite allows you to view, rotate, and print STL and SVD files. The Lite version is designed only to get your project to a basic production level. However, the company offers paid versions with high-level functionality that range from a $99 purchase to a $249.95 per month subscription.
Download For:
Windows
Best Full-Featured Open-Source Tool: FreeCAD
What We Like
-
Runs the same way on Windows, Linux, and macOS.
-
Fast rendering of 3D scenes.
-
A good user interface and can run in command-line mode.
-
Revise and edit 3D model files for printing.
What We Don’t Like
-
Export function for other formats requires an add-on.
FreeCAD is a good open-source parametric modeling tool that can import and export a variety of files, including STL, DAE, OBJ, DXF, STEP, and SVG. Because it’s a full-service CAD program, it’s also a design tool. Design a project from the ground up as well as adjust, repair, and view designs.
Download For:
Windows
Mac
Linux
Most Customizable Open-Source Tool: Wings 3D
What We Like
-
Powerful and easy to use.
-
A range of modeling tools.
-
The customizable interface.
What We Don’t Like
-
The interface requires a three-button mouse to use it effectively.
-
No support for animation.
Wings 3D is a comprehensive, open-source CAD program available in many languages. It imports and exports multiple file formats, including STL, 3DS, OBJ, SVG, and NDO. Wings 3D also offers a comprehensive set of mesh modeling and selection tools. Right-clicking in the program displays a context-sensitive menu with descriptions that appear when you hover over it.
Download For:
Windows
Mac
Linux
Best for Less Powerful Computers: MeshLab
What We Like
-
Edit, clean, inspect, render, and view files.
-
Prepares models for 3D printing.
-
Fast, efficient, and easy to install.
What We Don’t Like
-
Can’t create 3D objects from scratch.
MeshLab is an open-source STL viewer and editor created by students at the University of Pisa. It imports and exports a variety of file formats. You can clean, re-mesh, slice, measure, and paint models. It also comes with 3D-scanning tools.
MeshLab is a light and efficient tool that runs on computers without extensive processing power. Due to the ongoing nature of the project, MeshLab is constantly adding new features.
Download For:
Windows
Mac
Linux
Best Barebones Open-Source STL Viewer: Viewstl
What We Like
-
Small and easy to use.
-
Basic and easy-to-learn commands.
What We Don’t Like
-
Need a three-button mouse for it to work best.
Viewstl is a simple and easy open-source STL viewer that shows STL files as shaded on-screen images. It also supports Ascii STL files and dynamic rotation, scaling, and panning. Viewstl has basic, easy-to-learn commands and works best with a three-button mouse.
Download For:
Windows
Linux
Best Online STL Viewer: 3DViewer
What We Like
-
Works on computers, tablets, and smartphones.
-
No download needed.
-
Personalize the viewer to match your company style.
-
Upload and share 3D models.
What We Don’t Like
-
Must upgrade to a paid plan to upload multiple files or update online models.
3DViewer is a free online service. Use it to view STL files in a web browser without the need for software downloads. You can also upload 3D models, share models through the 3D Viewer, and save or share PDFs of your work.
After you create a free account, you get 5 GB of free storage. Paid versions of 3DViewer offer more storage and editing functionality.
Visit 3DViewer
Best Full-Service Modeling Program: BRL-CAD
What We Like
-
Advanced modeling features.
-
Available for multiple platforms.
-
Excellent documentation and coding.
-
Continually updated.
What We Don’t Like
-
It might be too complicated for a beginner.
If you’re looking for a full-service modeling program, the open-source BRL-CAD system is packed with advanced features, including interactive geometry editing, high-performance ray-tracing, and more. BRL-CAD has its own interface and can convert from one file format to another. It’s been an open-source project since 2004 and is used by the U.S. military to model weapons systems for vulnerability.
Download For:
Windows
Mac
Linux
Best Open-Source Tool for Album Management: GLC_Player
What We Like
-
Review loaded models while loading more models.
-
Excellent album-management features.
-
Easy navigation within models.
What We Don’t Like
-
May have more functionality than you need if you’re looking for a simple STL viewer.
GLC_Player is a free and open-source tool that you can use to view STL, OFF, 3DXML, COLLADA, OBJ, and 3DS files. It offers an English or French interface for Linux, Windows, and macOS. Use GLC_Player to create and manage albums, and export albums as HTML files. Use its album-management features to load several models, view thumbnails of loaded models, and switch between models. Albums files can be saved and reopened later.
Download For:
Windows
Mac
Linux
Best Combination Viewer and Modeling Program: Gmsh
What We Like
-
Fast and user-friendly interface.
-
Light on system resources.
-
The website offers tutorials and demos.
What We Don’t Like
-
Beginners may find it too complicated, while advanced users may need more features.
With a built-in post-processor and CAD engine, Gmsh is more than a viewer. It balances somewhere between a full CAD program and a simple viewer, providing a fast, light, and user-friendly meshing tool with parametric input and advanced visualization capabilities.
Download For:
Windows
Mac
Linux
Best for macOS: Pleasant3D
What We Like
-
View STL and GCode files.
-
Simple and uncluttered interface.
What We Don’t Like
-
It has only basic editing capabilities.
Pleasant3D was designed to work specifically with macOS. You can use it to view both STL and GCode files. However, it can’t convert one to the other and offers only basic editing abilities. Pleasant3D functions nicely as a basic viewer without the clutter of many extras.
Download For:
Mac
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