File Extension Library

.STP File Extension

  • Category: 3D Image Files

What is an .STP file?

.STP file extension has been classified as 3D Image Files.

.STP is STEP 3D CAD File

An STP file is a 3D assembly file supported by various mechanical design programs such as TurboCAD and Fusion 360. It contains three-dimensional object data saved in the Standard for the Exchange of Product Data (STEP) format. STP files are saved in a text-based ASCII format that conforms to the STEP Application Protocols ISO 10303-2xx.

STP files are primarily used for transferring 3D graphics between different CAD and CAM systems. Many manufacturers use the STP file for designing and pricing molds or manufactured parts.

NOTE: STP files may also use the less common .STEP extension.

List of all softwares that can open the STEP 3D CAD File
ideaMK STP Viewer
Autodesk Fusion 360
Dassault Systemes CATIA
CADSoftTools ABViewer
IMSI TurboCAD Deluxe
Autodesk Fusion 360
Dassault Systemes CATIA
Autodesk Fusion 360
Autodesk Fusion 360
Windows Phone
Autodesk Fusion 360
Autodesk Fusion 360
File Type 2:

RoboHelp Stop List File

Developer by: Adobe Systems Category: Data Files Format: Text

Plain text file created by RoboHelp, a Windows help authoring program; saves a stop list which contains keywords that the Smart Index wizard ignores when creating the help documentation search index; can only be 512 characters long; created as part of a RoboHelp project (.XPJ).

Stop lists usually contain words such as "the," "or," and "a." These are words that typically aren't useful to index as keywords for help documentation searches.

List of all softwares that can open the RoboHelp Stop List File
Adobe RoboHelp
File Type 3:

SharePoint Template

Developer by: Microsoft Category: Web Files

Website template created for Microsoft SharePoint, a Web-based collaboration program; contains a predesigned website that can be loaded from the SharePoint template gallery; used as a starting point for creating new websites.

To create an STP file, click "Site Settings." Then, under "Administration," choose "Go to Site Administration." Under Management and Statistics, select "Save site as template."

NOTE: SharePoint STP files only contain information about what is customized in the site. They do not include the complete definition of the website.

List of all softwares that can open the SharePoint Template
Microsoft Windows SharePoint Services
File Type 4:

Analysis Studio Project Information File

Developer by: Appricon Category: Data Files Format: XML

File created by Analysis Studio, a program used for data mining and statistical analysis; contains the project schema and project objects in an XML format; holds the actions, data transformations, and variables that allow a data set to be reconstructed from an original data set.

When Analysis Studio is in online mode, data may downloaded and reconstructed from a remote Analysis Server. When in offline mode, .DATA files stored on the local machine are used.

List of all softwares that can open the Analysis Studio Project Information File
Appricon Analysis Studio

How to Open .STP file on different platforms

Open .STP File on Windows

  • Right-click a .STP
  • Left-click "Open With" > "Choose another app"
  • Select the program that opens .STP file and Select check box "Always use this app to open .STP files" Press "Ok"

Open .STP File on Mac

  • Right-click (or Ctrl + Left-click) the .STP file
  • Click "Open With" > "Other.."
  • Then choose another program from the app list and press "Open"
  • Select check box "Turn on" for "Always open in app"

Open .STP File on Linux

Right click on the .STP file, choose "Open with" and select a program from the list above

Open .STP File on iPhone

Select a file. If you don't see an application to open the .STP file, tap "Share" and choose the right app.
Method 2
Save the file. Then open the app «Files». Touch and hold the file, then release your finger. You will see a black menu bar. After that tap "Share" and select an application.

Open .STP File on Android

Tap the Settings icon on an Android smartphone, then select «Applications». Click the Settings icon in the upper right corner of the screen, to change the default apps.
If you want to open, edit, save or even convert .STP files on Android, then your best bet is to download one of the dedicated apps available on Google Play.

How to fix problems with .STP files

  1. You need to update the application that you normally use to open .STP files. Only the latest version of the software supports the current .STP file format
  2. You need to check the .STP file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)