10 Best STEP File Viewer Software 2023

Well, an ISO standard for exchanging three-dimensional data is used for. Exchanging product data and/or STEP files. It could be used to design 3D diagrams. We can view, rotate, move, and zoom in on the 3D diagram using a STEP file viewer because it is compatible with the *.STP and *. STP can be converted to DWG, OBJ, DXF, and STL using STEP file formats.

What Is a STEP File, Exactly?

Computer-aided design (CAD) and related data transfer formats include STEP files. It follows the ASCII encoding standard, making it straightforward to read. The ISO 10303-21 standard for 3D graphics specifies the STP file extension. A p21 or STEP physical file may also be used to refer to a STEP file. It has numerous extensions, such as.STP,.STEP, and.p21, whereas.p21 is utilised for a number of different purposes. IMSI TurboCAD, Autodesk Fusion 360, and Dassault System Solidworks are just a few of the applications it is compatible with.

The STEP Viewers: Why Use Them?

Each CAD system differs from the others. As a result, it is challenging for users in the CAD sector to communicate 3D schematics and models. This problem is fixed by the STEP File Viewer software. The.STP and.STEP file extensions can open files with this programme. It is employed for the subsequent purposes:

1 – STEP is used in the worldwide data exchange initiative.

2 – All well-known computer-aided design (CAD) software is compatible with this platform.

3 – Its mathematical foundation enables its importation into CAM software.

4 – A neutral file format can be read by any reliable CAD software.

The Difference Between .STEP And .STP File Viewer

The differences between the.STEP and.STP file types are significant. However, the user exports/downloads the file in a variety of ways. The ability to open both.STEP and.STP files is provided by any STP file viewer.

What Application Can Open a STEP File?

CATIA is linked to the STP file. The file can be opened with any commercial CAD programme. To open STEP files, there are many online options. There are further possibilities * besides the online STEP viewer. STP file viewers consist of:

1 – Autodesk Fusion 360. 

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2 – IMSI TurboCAD Deluxe v7. 

3 – IMSI TurboCAD Deluxe 20. 

4 – CADSoftTools ABViewer. 

5 – Dassault Systemes CATIA. 

6 – FreeCAD. 

7 – STEP Tools STEP File Browser. 

8 – ideaMK STP Viewer.

How Can STP Be Quickly Converted To PDF/DWG?

None of the software supports for STEP to PDF conversion.

Comparing Windows STEP Viewer vs. STP File Viewer Online

The problem of choosing the best STP viewer has come up for me. The difference between an offline and an online STP file viewer. Significant is STP viewer.

Features Common to STP Viewer

Each.STP file viewer differs from the others in some way. However, the free STP viewer and the online viewer for.STP files have the following features in common:

1. Users may view all four sides of 3D objects in 2D.

2. All 3D item markers have an excellent tree view.

3. Wonderful dynamic zooming

4. Dynamic toolbox rotation is option number four.

5. Users can change a 3D object’s colour and shade.

System Requirement

OS – Windows Server 2003 & 2008; Windows XP, Vista, 7,8, & 10

Microsoft .NET Framework 2.0 (included in Windows XP SP2, Windows 7, Vista).

Online – Any Platform with a reliable web browser.

What Makes A STEP Viewer Required?

A viewer is necessary for STP files for both professionals and engineering students. You need a STEP file viewer to view every detail when opening a 3D model. A tree view allows you to see the 3D item separately. You may see the 3D item exactly as it appears in STEP file view. The accumulation of numerous templates and photos to heighten realism is made easier by the online STP viewer.

STEP Limitations

1 – Because a STEP file combines colour, curves, solids, and surfaces, problems could arise if the software is unable to read the STEP file’s geometry.

2 – The designer needs to be more careful to make sure that the geometry is made correctly to support various file formats.

The Top 10 STEP File Viewers STEP File Viewer

For the readers, we have managed 14+ of the greatest STEP File Viewer Online Free solutions. Please be aware that only a select few people are free 24/7. The Free STEP File Viewer has a time limit on how long you may use it. However, some software is accessible for free.

1. GLC Player

GLC Player

A well-known software for viewing 2D and 3D models is GLC Player. All features and file types are supported. It is referred to be multipurpose freeware as a result. Because the results produced by this free STEP Viewer are precise and significant, professionals employ this practical software. 3DXML V3 and V4 (Ascii), STL (binary + ASCII), OBJ, and 3DS are just a few of the formats that it supports for 3D visualisation.

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To view the STEP file, use the free software IDA-STEP. It is extremely configurable and user-friendly. You can see your 3D model in its various parts. It offers a novel viewpoint on managing.STP and.STEP files. Like the other STEP viewer, it supports left, right, back, bottom, and front views.

3. STP Viewer

STP Viewer

STP Viewer is a simple CAD software. All 3D item markers can be viewed in a tree-like view. Dynamic zooming is possible using the mouse or the toolbox. You may view both the 2D and 3D sides using this incredible tool. You may also view wireframes and change the line colour.

4. STL View

STL View

With only rudimentary software of 3D and CAD, novices can use STL View. The STP viewer can fulfil your main needs. It is incredibly portable and lightweight. As a result, the STL View is excellent for using STEP files’ basic functions. Zip files will be downloaded automatically when you directly download from the indicated website.

5. Open 3D Model Viewer

Open 3D Model Viewer

An additional helpful tool for working with STEP files is Open 3D Model Viewer. It is an excellent solution for 3D design and printing. You might be able to design, read, and fulfil STP files using this STEP file viewer. Open 3D Model Viewer is also open source and cost-free to use.



The STEP viewer software AUTODESK 123D DESIGN is user-friendly and capable of performing a variety of complicated operations. Both professionals and novices who are interested in design can use it. This excellent software allows you to resize, scale, pan, zoom, move, rotate, align, orbit, and fit images just like with other STP viewers.


1 – The export of 2D and 3D models is possible with the STP file viewer in AUTODESK 123D DESIGN.

2 – Files in 2D, 3D, X3D, STL, SAT, DWG, and DWG formats can all be exported, as well as files in DXF, SVG, and DWG formats for 2D.

3 – It supports patterning, snapping, combining, and grouping.

4 – Extrude, sweep, and revolve are three examples of several building parameters that can be used.

5 – It is one of the best STP file viewers for manufacturing and engineering.

7. Sharecad.Org


One of the best free online CAD viewers that can open several STEP files is You may view your preferred file on Windows, Linux, Mac, Android, and iPhone because it supports all browsers. It supports DXF, DWF, HPGL, PLT, CGM, and DWG formats. Perspective

2 – The file may be kept on the server after registration.

You can use your computer to access previously loaded files.

4 – A file repository may also be accessed through it.

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5 – The largest file that can be uploaded on this platform is 50 MB.

6 – 3D Wireframe, 3D Hidden Lines, and 3D Smooth Shading are excellent to view at.

7 – This software’s functionality and navigation are straightforward.



A freeware STP file viewer for Windows and Linux is called gCAD3D. Well, this built-in 3D-OpenGL viewer supports a variety of file import and export formats. Viewing STEP, IGES, VRML, DXF, SVG, and other file types is simple.

CAD3D Perspective

1 – GCAD3D is one of the top free STEP viewers out there.

2 – It also shows a variety of view options, including viewport, scal.all, scal.fix, side, axo, top, and front.

3 – It is governed by the GNU General Public License.

4 – Using and customising gCAD3D is straightforward.

9. 3D Viewer Online

3D Viewer Online

An excellent tool for reading STEP files is 3D Viewer Online. For STEP files, you are given up to 5 GB of free cloud storage. You can include other files, such as OBJ, PLY, STL, etc. You have 50 MB of storage space total. You can incorporate Web API for the 3D viewer to provide value for your consumer. Most 2D and 3D file types are supported by 3D Viewer Online.

Online 3D Viewer Insight

1 – You can reveal and conceal smart lines with this Viewer.

2 – It is simple to take a screenshot of your work.

3 – Defining the X, Y, and z cutting planes is simple.

4 – STEP file upload space of up to 50 MB.

5 – You can choose from a variety of view modes.

10. Autodesk Viewer

Autodesk Viewer

Autodesk Viewer is one of the most enjoyable and practical online STEP file viewers. You may quickly view and share your design using any online browser. As for STEP and SOLIDWORKS, it supports practically all 3D and 2D file formats. Additionally, you can print your design or share it via the URL if you think it’s necessary. You can also take a screenshot and email it to your friend.

Viewer Insight for Autodesk

1 – Distances can be measured using Autodesk Viewer from a variety of angles.

2 – To view from various perspectives, you can zoom in and out.

3 – The file’s properties are shown in a separate box.

4 – It is simple to share your presentation because you can utilise the URL, take a screenshot, and print it.

5 – Any file can be marked up using annotations.

It is a simple STEP file viewer.


Beginners find STEP files difficult. Using and managing these files without prior understanding will be very challenging. However, you can use a free STEP file viewer to open and view the design. In addition, if you don’t want to download any software, you can utilise an online STEP file viewer.

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