Opening an SQI File

The SQI file type is primarily associated with Squish.

SQI	File extension: SQI
	File type:	Message Base Index

What is an SQI file

SQI files mostly belong to Squish. Use our "Online SQI Text Viewer" below to analyze your SQI file and to see all text it contains.

How to open SQI files

You need a suitable software like Squish to open an SQI file. You need a suitable software like Squish to open an SQI 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 SQI file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a SQI file directly in the browser:. Just drag the file onto this browser window and drop it.

Online SQI Text Viewer

Choose your .sqi file to analyze

or drag and drop it here

Online File Viewer

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Trouble Opening a .SQI File? These Steps Will Help

Because .SQI files can originate from various programs, they aren't universally openable with standard software.

Identify the Source: If it's from a legacy BBS or Fidonet system, it's likely a Squish Message Base Index. If from a developer, it may be a database index.
Check the Header: Open the file in a hex viewer to inspect the first bytes.
- Readable text suggests a configuration file.
- Scrambled characters indicate a binary format like a compiled index.
Use the Original Software: You generally need the creating program. Try Fidonet mailers (like Squish), database tools, or ask the sender.
Use this Webpage: Drag and drop the file into our viewer to detect the format, extract readable text/metadata, and preview when possible.

Technical Data for SQI File Extension

Related files:

sql, zip, bin, ipp, nsx, mmi

an sqi Message Base Index is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with SQI files

Associate the SQI file extension with the correct application.
Update your software that should actually open message base indexes. Because only the current version supports the latest SQI file format. Search, therefore, e.g. on the manufacturer website after an available Squish update.
To make sure that your SQI file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .SQI file online - secure, fast, and no downloads needed.