File Type of the Day
.AAC
Advanced Audio Coding File
An AAC file is an audio file similar to an .MP3 file but compressed with Advanced Audio Coding (AAC), a lossy digital audio compression standard. The lossy compression maintains quality nearly indistinguishable from the original audio source, making it optimal for compressing music data.
.JS
JavaScript File
A JS file is a plain text file that contains JavaScript code. It is used to execute JavaScript instructions in a webpage.
.IDX
VobSub Subtitles Index File
An IDX file is a subtitles index file created and used by VobSub, a program that allows users to extract subtitles from DVDs. It contains a list of plain text settings and timestamps used to show the subtitles that a .SUB (VobSub Subtitles) file contains.
Weekly Top Extensions
—.APKAndroid Package File —.TORRENTBitTorrent File —.EXEWindows Executable File —.HEICHigh Efficiency Image Format —.JSONJavaScript Object Notation File .CRYPT14WhatsApp Encrypted Database File+1 .CSVComma-Separated Values File-1 .JPGJPEG Image+1 .ICSCalendar File-1 —.EMLE-Mail Message —.VCFvCard File —.TXTPlain Text File —.TMPTemporary File —.SB3Scratch 3.0 Project .NOMEDIAAndroid No Media File+1 .PDFPortable Document Format File-1 .VTTWeb Video Text Tracks File+2 .RARWinRAR Compressed Archive-1 .XAPKCompressed Android Package-1 —.BINGeneric Binary File .ZIPZipped File+3 —.HTMLHypertext Markup Language File .LNKWindows Shortcut-2 .MP4MPEG-4 Video+1 .MSIXMSIX Installer Package-2Universal File Viewers
Open your files with one of the file viewing utilities recommended by FileInfo.com.
About FileInfo.com
FileInfo.com contains a searchable database of over 10,000 file extensions with detailed information about the associated file types. You can look up information about unknown file types and find programs that open the files. Learn more about FileInfo.com.
Recent Updates
- May 4, 2023File Viewer for Android 4.4 is now available.
- March 31, 2023Learn how to view file properties in Windows 11.
- March 22, 2023Learn how to create a shortcut in Windows 11.
- February 24, 2023Learn how to change desktop icon size in Windows 11.
- February 24, 2023Learn how to save a file as PDF in Windows 11.
- February 6, 2023File Viewer Plus 4.3 is now available.
- December 27, 2022Add the updated File Extension Search Box to your website.
- November 16, 2022Learn how to zip files in Windows 11.
- November 16, 2022Learn how to show hidden files in Windows 11.
- October 13, 2022File Viewer for Android 4.2.2 is now available.
- October 12, 2022Learn how to identify and open files without an extension.
- October 10, 2022Learn how to open camera raw files.
- June 17, 2022Drop a file on the home page to identify the file type.