File Extension Library

.SIDX File Extension

  • Developer by: Smith Micro
  • Category: Data Files
  • Format: Binary

What is an .SIDX file?

.SIDX file extension is created by Smith Micro. .SIDX has been classified as Data Files. The format of .SIDX file is Binary.

.SIDX is StuffIt Archive Index File

Index file created by StuffIt Deluxe, a file compression and decompression utility; contains a list of reference information about files in a separate file archive; enables users to browse the contents of a particular archive without having to process or decompress it first.

NOTE: SIDX files do not store the files they reference. They only store information about the file contents in a separate archive.

List of all softwares that can open the StuffIt Archive Index File
Smith Micro StuffIt Deluxe for Windows
Smith Micro StuffIt Deluxe 16

How to Open .SIDX file on different platforms

Open .SIDX File on Windows

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

Open .SIDX File on Mac

  • Right-click (or Ctrl + Left-click) the .SIDX 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 .SIDX File on Linux

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

Open .SIDX File on iPhone

Select a file. If you don't see an application to open the .SIDX 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 .SIDX 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 .SIDX files on Android, then your best bet is to download one of the dedicated apps available on Google Play.

How to fix problems with .SIDX files

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