Opening ST7 Files

The ST7 file type is primarily associated with Strand7.

ST7	File extension: ST7
	File type:	data file

What is an ST7 file?

ST7 files mostly belong to Strand7. ST7 files have specific roles that depend on the context in which they are created.

Strand7 model files: These store data for engineering simulations. They keep details like geometry, material properties, and load conditions used in finite element analysis. Use Strand7 software to view or edit these models.

ST-7 compressed image files: These hold image data from SBIG CCD cameras. The files use a compressed format for storing raw data from astrophotography, and they are handled by SBIG CCDOPS. More details are available at this webpage.

FilExt.com tip: The file extension is context-specific. To work with an ST7 file, check its creation source and open it using the correct software.

How to open ST7 files

You need a suitable software like Strand7 to open an ST7 file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your ST7 file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a ST7 file directly in the browser:. Just drag the file onto this browser window and drop it.

Online ST7 File Viewer

Choose your .st7 file to view this image

or drag and drop it here

Online File Viewer

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How do you convert ST7 files to JPG, PDF, HTML, DOC, ...

1. Just click the "Choose your .st7 file to view this image" button on this page.
2. Your ST7 file will then be displayed in the browser.
3. Now click on "Save as..." at the top of the page.
4. Then click the file format (e.g. PDF, JPG, DOCX, TXT, ...) you want.
5. Download the converted file.

ST7 file format:

Why is it important to know the file format? This is the only way to find out which program to use to open the file. The file format can be determined based on the file extension and the signature (the first few characters of a file). Nonetheless, different programs can utilize the same file extension to represent distinct file formats. Double-clicking on the file often results in an error when opening. Exact knowledge of the format is therefore important in order to solve problems occurring in files. Our evaluation of the ST7 files looks like this:

ST7 is rarely used as a file extension and covers different formats for different programs. The two most popular formats are as follows:

• 55% of all ST7 files start with the bytes 20 00 00 00, which are crucial for this file format. The contents of these files cannot be read by a human; only a computer program can interpret the data. ST7 files are between 140 KB and 12 MB in size. It is a modern file type. Several words can almost always be found in the files, e.g. STRAND7/STRAUS7. Such files sometimes refer to model, foundation, stiffness, analysis, frame and wall.
• 35% of all ST7 files start with the bytes ST-, which are crucial for this file format. They consist of unreadable binary data. A typical file size is 400 KB. Several words can almost always be found in the files, e.g. Aperture, Data_version = 1, File_version = 3, Background, ST-7 Compressed Image, Focal_length = 80.000, Range, Note = -, Response_factor = 1000.000, Exposure = 3000, Height = 510 and Response_factor = 3000.000. Files like these are sometimes connected to point, zero and solar.

All other ST7 files (10%) have no uniform format, the following 3 formats can be found: SBIG. These files sometimes refer to minus or grad. Just click the "Choose your .st7 file to view this image" button on this page to find out what your ST7 file is.